Full Text
EXTRAORDINARY
PART II —Section 3 —Sub-section (i)
PUBLISHED BY AUTHORITY
No. 468] NEW DELHI, THURSDAY, JUNE 25, 2026/ASHADHA 4, 1948
CG-DL-E-16072026-274534
Cb= Δ/(L.B.d 1.)
िार= 5+(L H-100)a in t/m2
F = F1 + F2 - fp sq.m
1 - (lw/lt)2
0.5 (hs/hw)
Ac = lw((hb - 1.2)/0.10)(0.004) m2;
Ac = lw((hb - 0.9)/0.10)(0.004) m2;
As = (0.07lt) ( शीयर करेक्शन) (bo/lt) (1 - (lw/lt)2) (0.5hs/hw);
‘B-
(ग)(i)
(च)(i) (क)
(ग)(i)
(ग)(ii)
(ग)(iv)
(घ)(i)
(घ)(ii)
(घ)(iii)
(च)(i)
(च)(ii)
(च)(iv) >3000 लम.मी. (क)
(ग)(i)
(ग)(ii)
(च)(i)
(च)(ii)
(ग)(i)
(च)(i) (क)
(ग)(i)
(ग)(ii)
(च)(i)
(च)(ii) (क)
(ग)(i)
(ग)(ii)
(च)(i)
(च)(ii)
(ग)(i)
(घ)(i)
(च)(i) (क)
(ग)(i)
(ग)(ii)
(घ)(i)
(घ)(ii)
(च)(i)
(च)(ii) (क)
(ग)(i)
(ग)(ii)
(ग)(iv)
(घ)(i)
(घ)(ii)
(घ)(iii)
(च)(i)
(च)(ii)
(च)(iv)
बीच। < (Af + Hs)**
(च)(i)
(च)(ii)
> (Af + Hs)**
(च)(i)
(च)(ii)
(Cb+0.68)/1.36
उससे कम 50 139 175 170 290
109 52 140 181 171 292
110 55 141 186 172 294
111 57 142 191 173 297
112 59 143 196 174 299
113 62 144 201 175 301
114 64 145 206 176 304
115 68 146 210 177 306
116 70 147 215 178 308
117 73 148 219 179 311
118 76 149 224 180 313
119 80 150 228 181 315
120 84 151 232 182 318
121 87 152 236 183 320
122 91 153 240 184 322
123 95 154 244 185 325
124 99 155 247 186 327
125 103 156 251 187 329
126 108 157 254 188 332
127 112 158 258 189 334
128 116 159 261 190 336
129 121 160 264 191 339
130 126 161 267 192 341
131 131 162 270 193 343
132 136 163 273 194 346
133 142 164 275 195 348
134 147 165 278 196 350
135 153 166 280 197 353
136 159 167 283 198 355
137 164 168 285 199 357
138 170 169 287 200 358
75 1.2 1.8
24 350
85 860
122 1070
0 0.1
L का 1/6
L का 1/3
0 1
S = YL'/3L
(0.75 - S1/2L)
L / 56L(1 -1.36 / 500) Cb+0.68 लमलीमीटर ;
0 0.1
प्रनतशत 20 31 42 53 64 70 76 82 88 94 100
24 200 138 1770 252 3024
25 208 139 1787 253 3030
26 217 140 1803 254 3036
27 225 141 1820 255 3042
28 233 142 1837 256 3048
29 242 143 1853 257 3054
30 250 144 1870 258 3060
31 258 145 1886 259 3066
32 267 146 1903 260 3072
33 275 147 1919 261 3078
34 283 148 1935 262 3084
35 292 149 1952 263 3089
36 300 150 1968 264 3095
37 308 151 1984 265 3101
38 316 152 2000 266 3106
39 325 153 2016 267 3112
40 334 154 2032 268 3117
41 344 155 2048 269 3123
42 354 156 2064 270 3128
43 364 157 2080 271 3133
44 374 158 2096 272 3138
45 385 159 2111 273 3143
46 396 160 2126 274 3148
47 408 161 2141 275 3153
48 420 162 2155 276 3158
49 432 163 2169 277 3163
50 443 164 2184 278 3167
51 455 165 2198 279 3172
52 467 166 2212 280 3176
53 478 167 2226 281 3181
54 490 168 2240 282 3185
55 503 169 2254 283 3189
56 516 170 2268 284 3194
57 530 171 2281 285 3198
58 544 172 2294 286 3202
59 559 173 2307 287 3207
60 573 174 2320 288 3211
61 587 175 2332 289 3215
62 600 176 2345 290 3220
63 613 177 2357 291 3224
64 626 178 2369 292 3228
65 639 179 2381 293 3233
66 653 180 2393 294 3237
67 666 181 2405 295 3241
68 680 182 2416 296 3246
69 693 183 2428 297 3250
70 706 184 2440 298 3254
71 720 185 2451 299 3258
72 733 186 2463 300 3262
73 746 187 2474 301 3266
74 760 188 2486 302 3270
75 773 189 2497 303 3274
76 786 190 2508 304 3278
77 800 191 2519 305 3281
78 814 192 2530 306 3285
79 828 193 2541 307 3288
80 841 194 2552 308 3292
81 855 195 2562 309 3295
82 869 196 2572 310 3298
83 883 197 2582 311 3302
84 897 198 2592 312 3305
85 911 199 2602 313 3308
86 926 200 2612 314 3312
87 940 201 2622 315 3315
88 955 202 2632 316 3318
89 969 203 2641 317 3322
90 984 204 2650 318 3325
91 999 205 2659 319 3328
92 1014 206 2669 320 3331
93 1029 207 2678 321 3334
94 1044 208 2687 322 3337
95 1059 209 2696 323 3339
96 1074 210 2705 324 3342
97 1089 211 2714 325 3345
98 1105 212 2723 326 3347
99 1120 213 2732 327 3350
100 1135 214 2741 328 3353
101 1151 215 2749 329 3355
102 1166 216 2758 330 3358
103 1181 217 2767 331 3361
104 1196 218 2775 332 3363
105 1212 219 2784 333 3366
106 1228 220 2792 334 3368
107 1244 221 2801 335 3371
108 1260 222 2809 336 3373
109 1276 223 2817 337 3375
110 1293 224 2825 338 3378
111 1309 225 2833 339 3380
112 1326 226 2841 340 3882
113 1342 227 2849 341 3385
114 1359 228 2857 342 3387
115 1376 229 2865 343 3389
116 1392 230 2872 344 3992
117 1409 231 2880 345 3394
118 1426 232 2888 346 3396
119 1442 233 2895 347 3399
120 1459 234 2903 348 3401
121 1476 235 2910 349 3403
122 1494 236 2918 350 3406
123 1511 237 2925 351 3408
124 1528 238 2932 352 3410
125 1546 239 2939 353 3412
126 1563 240 2946 354 3414
127 1580 241 2953 355 3416
128 1598 242 2959 356 3418
129 1615 243 2966 357 3420
130 1632 244 2973 358 3422
131 1650 245 2979 359 3423
132 1667 246 2986 360 3425
133 1684 247 2993 361 3427
134 1702 248 3000 362 3428
135 1719 249 3006 263 3430
136 1736 250 3012 364 3432
137 1753 251 3018 365 3433
24 200 138 2065 252 4045
25 208 139 2087 253 4058
26 217 140 2109 254 4072
27 225 141 2130 255 4085
28 233 142 2151 256 4098
29 242 143 2171 257 4112
30 250 144 2190 258 4125
31 258 145 2209 259 4139
32 267 146 2229 260 4152
33 275 147 2250 261 4165
34 283 148 2271 262 4177
35 292 149 2293 263 4189
36 300 150 2315 264 4201
37 308 151 2334 265 4214
38 316 152 2354 266 4227
39 325 153 2375 267 4240
40 334 154 2396 268 4252
41 344 155 2418 269 4264
42 354 156 2440 270 4276
43 364 157 2460 271 4289
44 374 158 2480 272 4302
45 385 159 2500 273 4315
46 396 160 2520 274 4327
47 408 161 2540 275 4339
48 420 162 2560 276 4350
49 432 163 2580 277 4362
50 443 164 2600 278 4373
51 455 165 2620 279 4385
52 467 166 2640 280 4397
53 478 167 2660 281 4408
54 490 168 2680 282 4420
55 503 169 2698 283 4432
56 516 170 2716 284 4443
57 530 171 2835 285 4455
58 544 172 2754 286 4467
59 559 173 2774 287 4478
60 573 174 2795 288 4490
61 587 175 2815 289 4502
62 601 176 2835 290 4513
63 615 177 2855 291 4525
64 629 178 2875 292 4537
65 644 179 2895 293 4548
66 659 180 2915 294 4560
67 674 181 2933 295 4572
68 689 182 2952 296 4583
69 705 183 2970 297 4595
70 721 184 2988 298 4607
71 738 185 3007 299 4618
72 754 186 3025 300 4630
73 769 187 3044 301 4642
74 784 188 3062 302 4654
75 800 189 3080 303 4665
76 816 190 3098 304 4676
77 833 191 3116 305 4686
78 850 192 3134 306 4695
79 868 193 3151 307 4704
80 887 194 3167 308 4714
81 905 195 3185 309 4725
82 923 196 3202 310 4736
83 942 197 3219 311 4748
84 960 198 3235 312 4757
85 978 199 3249 313 4768
86 996 200 3264 314 4779
87 1015 201 3280 315 4790
88 1034 202 3296 316 4801
89 1054 203 3313 317 4812
90 1075 204 3330 318 4823
91 1096 205 3347 319 4834
92 1116 206 3363 320 4844
93 1135 207 3380 321 4855
94 1154 208 3397 322 4866
95 1172 209 3413 323 4878
96 1190 210 3430 324 4890
97 1209 211 3445 325 4899
98 1229 212 3460 326 4909
99 1250 213 3475 327 4920
100 1271 214 3490 328 4931
101 1293 215 3505 329 4943
102 1315 216 3520 330 4955
103 1337 217 3537 331 4965
104 1359 218 3554 332 4975
105 1380 219 3570 333 4985
106 1401 220 3586 334 4995
107 1421 221 3601 335 5005
108 1440 222 3615 336 5015
109 1459 223 3630 337 5025
110 1479 224 3645 338 5035
111 1500 225 3660 339 5045
112 1521 226 3675 340 5055
113 1543 227 3690 341 5065
114 1565 228 3705 342 5075
115 1587 229 3720 343 5086
116 1609 230 3735 344 5097
117 1630 231 3750 345 5108
118 1651 232 3765 346 5119
119 1671 233 3780 347 5130
120 1690 234 3795 348 5140
121 1709 235 3808 349 5150
122 1729 236 3821 350 5160
123 1750 237 3835 351 5170
124 1771 238 3849 352 5180
125 1793 239 3864 353 5190
126 1815 240 3880 354 5200
127 1837 241 3893 355 5210
128 1859 242 3906 356 5220
129 1880 243 3920 357 5230
130 1901 244 3934 358 5240
131 1921 245 3949 359 5250
132 1940 246 3965 360 5260
133 1959 247 3978 361 5268
134 1979 248 3992 362 5276
135 2000 249 4005 363 5285
136 2021 250 4018 364 5294
137 2043 251 4032 365 5303
.
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__________ लममी
__________________________________________ डेक बगल में।
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.................................... को....................................................... पर जारी ककया गया।
MINISTRY OF PORTS, SHIPPING AND WATERWAYS
NOTIFICATION
New Delhi, the 25th June, 2026
G.S.R. 519(E). — In exercise of the powers conferred by sub -sections (1) and (2) of section
116, sub -section (2) of section 121 read with sub -section (1) and clause (f) of sub -section (2) of
section 130 of the Merchant Shipping Act, 2025 (24 of 2025) , the Central Government hereby
makes the following rules, namely: –
PART I
PRELIMINARY
1. Short title and commencement . — (1) These rules may be called the Merchant Shippin g
(Load Line) Rules, 2026.
(2) They shall come into force on the date of their publication in the Official Gazette.
2. Application. — (1) These rules shall apply to —
(a) every Indian vessel , other than a vessel of war, a Government vessel not engaged in
commercial s ervice , a fishing vessel, a pleasure yacht or a sailing vessel, which is —
(i) 24 meters or more in length; or
(ii) 150 gross tonnage or more; or
(b) every vessel other than Indian vessel to which the International Convention on Load
Lines, 1966, as amended by the Protocol of 1988 and subsequent amendments,
applies, while it is —
(i) within the coastal waters of India; or
(ii) at any port or place in India,
(iii) except when entering such waters or port solely due to stress of
weather or circumstances beyond the contro l of the master, owner or
charterer ; or
(c) Indian vessels not engaged on international voyages but falling within clause (a) shall
be required to carry an India Load Line Certificate under these rules, while vessels
engaged on international voyages shall be required t o carry an International Load Line
Certificate, as applicable :
Provided that the requirements under these rules shall apply only to
vessels, the keel of which was laid or was at a similar stage of construction
after the coming into force of these rules:
Provided further that such vessel s, the keel of which was laid or was at a
similar stage of construction before the date of coming into force of these
rules, shall comply with the requirements specified in Merchant Shipping
(Load Line) Rules , 1979 m ade unde r the Merchant Shipping Act, 195 8 (44 of
1958); as it existed prior to its repeal
(2) every vessel to which these rules apply under this rule shall comply with the
requirements of the International Convention on Load Lines, 1966, as amended, as
implemented thr ough these rules and the Schedule s.
(3) Every vessel to which these rules apply under this rule shall comply with the technical
requirements specified in the Schedule s to these rules, subject to the part -wise
applicability indicated therein.
3. Definitions. — (1) In these rules, unless the context otherwise requires, —
(a) "Act" means the Merchant Shipping Act, 2025 (24 of 2025 );
(b) "approved" means approved by the assigning authority ;
(c) "assigning Authority" means the Chief Ship Surveyor, or any other surveyor authorised
in this behalf by the Director -General, who shall assign the load line in accordance
with section 121 of the Act ;
(d) “Convention” means the International Convention on Load Lines, 1966, as amended
by the Protocol of 1988 , and as amended ;
(e) "existing vessel " means a vessel which is not a new vessel;
(f) “Load Line Certificate” means an International Load Line Certificate or India Load Line
Certificate, as the case may be, as issued under rule 8;
(g) "new ship" means a ship the keel of which is laid, or which is at a simi lar stage of
construction, on or after the date of coming into force of the se rules
(h) "notice” means any notice issued by the Director -General under section 301 of the Act;
(i) “Schedule ” means a Schedule annexed to these rules;
(j) “similar stage of construction”, in relation to a vessel, means the stage at which —
(i) construction identifiable with a specific vessel begins; and
(ii) assembly of that vessel has commenced comprising at least 50
tonnes or 1 per cent. of the estimated mass of all structural material,
whiche ver is less.
(2) Words and expressions used in these rules but not defined herein shall have the
meanings respectively assigned to them in the Act, and in the applicable Codes
and Conventions.
PART II
SURVEYS AND CERTIFICATES
4. Application for Survey . — (1) Applicati on for the survey of a vessel for the purpose of
assignment of freeboard and for the issue of a load line certificate shall be made to the
Assigning Authority by or on behalf of the owner of the vessel .
(2) The applicant shall furnish to the Assigning Autho rity such plans, drawings and
specifications including —
(a) the general arrangement plan;
(b) hull construction and deck layout ;
(c) stability information ; and
(d) load line particulars —,
and other documents and information relating to the design and construction of the
vessel as the Assigning Authority may require .
5. Load line surveys . — (1) Upon receipt of the application and the documents together with
other relevant information required under rule 4, the Assigning Authority shall cause the vessel
to be surveyed, includ ing, in the case of a vessel being put into service for the first time, an
initial survey consisting of a complete inspection of its structure, equipment, arrangements,
material and scantlings so as to ensure compliance with these rules and the Convention, for
the purpose of determining —
(a) whether the vessel complies with such of the requirements of Part IV of these rules
and the First Schedule , as applicable ; and
(b) such other data as may be necessary :-
(i) for the assignment of freeboard to the vessel in accordanc e with Part V of
these rules and the Second Schedule ; and
(ii) to enable the stability information to be supplied to the master of the vessel
pursuant to Part VI of these rules and the Third Schedule .
(2) In the course of survey of a vessel pursuant to the provisio ns of sub -rule 5, the vessel
and any of its fittings shall be submitted to such tests as may, in the opinion of the
Assigning Authority, be necessary to ascertain that the vessel complies with the
requirements o f sub -rule (1) and a ny test pertaining to stability of a vessel shall be
subject to the requirements of rule 39.
(3) The owner or any other person on his behalf applying for the survey of the vessel
under rule 4, shall afford all necessary facilities for such survey and shall, at the
request of the Assigning Authority, furnish, for the use of the Assigning Authority and
retention if necessary, such further documents and information as the Assigning
Authority may requ ire.
6. Report of survey. — (1) On completion of the survey, the surveyor shall submit a report of
survey to the Assigning Authority giving the results of the survey and his findings on the
condition of the vessel with reference to the requirements of rule Error! Reference source
not found. .
(2) The report of survey shall be accompanied by the record of conditions of assignment
in the form set out in the Fourth Schedule complying with the requirements of rule 34
and the computations of freeboard complying with the requirement of Part V of these
rules and the Second Schedule .
(3) In the case of any vessel which is required to comply with the requirements of Part I
of the Third Sch edule relating to stability the surveyor shall furnish to the Assigning
Authority such information as may be necessary to determine whether the vessel
complies with these requirements.
7. Assignment of freeboards. — (1) The Assigning Authority shall —
(a) if satis fied on scrutiny of report of survey that vessel complies with the applicable
requirements of Part IV of these rules and the First Schedule ; and
(b) on receipt of an intimation from the Assigning Authority that it is satisfied that the vessel
complies with the requirements of Part VI of these rules and the Third Schedule
relating to stability ,
assign freeboard to the vessel in accordance with Part V of these rules and Second
Schedule .
(2) On assignment of freeboards, the Assigning Authority shall furnish to the ow ner of
the vessel —
(a) particulars of freeboards so assigned;
(b) directions specifying —
(i) the load lines to be marked on the vessel in accordance with the
requirements of Part III of these rules;
(ii) the position in which those load lines, the deck line and the load li ne
mark are to be so marked; and
(c) two copies of the Record of Conditions of Assignment.
8. Issue of Load Line Certificates and Forms thereof. — (1) Subject to the provisions of rule
13, the Assigning Authority shal l, on being satisfied that the vessel has been duly marked in
accordance with the directions given to the owner of the vessel under rule 7, issue either an
International Load Line Certificate (1966) or an India Load Line Certificate as may be required
under the Act, in the Form set out for such certificates in the Fifth Schedule .
(2) Certificates may be issued by another government in the following manner ,
namely: —
(a) a contracting government may, at the request of the Director -General , cause a vessel
to be surveyed and, if satisfied that the provisions of the the Convention as amended
are complied with, shall issue or authori se the issue of an Internation al Load Line
Certificate to the vessel in accordance with the International Load Line Convention
1966, as amended by its 1988 Protocol;
(b) a copy of the said certificate, a copy of the survey report used for computing the
freeboard, and a copy of the computations shall be transmitted as early as possible to
the Director -General ; and
(c) a certificate so issued shall contain a statement to the effect that it has been issued at
the request of the Government of India, whose flag the vessel is or will be flying and ,
it shall have the same force and receive the same recognition as a certificate issued
under these rules.
(3) Multiple load lines may be assigned in the following circumstances and manner ,
namely :—
(a) where a vessel is intended to operate under different service conditions, seasonal
zones or trading patterns, the Director -Genera l may assign more than one load line to
such vessel , subject to compliance with these rules; and
(b) the procedure, conditions and limitations for the assignment of multiple load lines for
Indian vessels shall be in accordance with such instructions or notices as may be
issued by the Director -General from time to time .
9. Duration of certificate . — Every Load Line Certificate issued under these rules shall be valid
until a date to be determined by the Assigning Authority not being a date more than five years
after the date of completion of survey of the vessel under rule Error! Reference source not
found. and such date shall be specified by the Assigning Authority in every certificate issued
by it, failing which the certi ficate shall not be deemed to be a valid certificate.
10. Extension of Load Line Certificate . — (1) Where any vessel, in respect of which a Load
Line Certificate is in force, has been surveyed following an application made by the owner for
the issue of a fres h certificate to take effect on the expiry of the current certificate, the
Assigning Authority or surveyor may, —
(a) if satisfied , on scrutiny of survey , that the vessel complies with applicable requirements
of Part IV of these rules and of the First Schedule relating to conditions of assignment ;
or
(b) on receipt of an intimation from the Director -General that the vessel complies with the
requirements of the Third Schedule relating to stability ;
(c) extend the validity of the current certificates of the vessel by a p eriod not exceeding
five months, if he considers that it is not reasonably practicable to issue a fresh
certificate and i n every such case, a fresh certificate shall be issued after the expiry of
the extended date of validity of the current certificate.
(2) No such extension granted under sub -rule (1) shall have effect unless particulars of
the date upto which the period of validity of the certificate is extended, together with
particulars of place at and date on which extension was granted, are endorsed by
the Assigning Authority or surveyor, on the current certificate.
(3) The period of validity of a fresh certificate ultimately issued to a vessel under sub -
rule (1) shall not exceed five years from the date of completion of survey referred to
in the said sub-rule.
11. Cancellation of Load Line Certificates . — (1) Where the Director -General is satisfied,
whether by a report from an Assigning Authority or a surveyor or otherwise, that —
(a) the vessel to which the certificate relates does not comply with the conditions of
assignment ; or
(b) the structural strength of the vessel is lowered to such an extent as to render the vessel
unsafe ; or
(c) information on the basis of which freeboards were assigned to the vessel has proved
to be incorrect in matters of material importance ; or
(d) the fittings and appliances mentioned in clause ( a) of sub -rule (1) of rule 12 are not
maintained in an effective condition , the Director -General may cancel, or cause to be
cancelled, any Load Line Certificate issu ed under these rules.
(2) Where it comes to the notice of the Director -General that—
(a) the certificate of a vessel is not endorsed as required by rule 12; or
(b) a new certificate is issued in respect of the vessel ; or
(c) the vessel has ceased to be an Indian vessel within the meaning of the Act,
he, after giving the owner of the vessel a reasonable opportunity of making his
representation, may cancel or cause to cancel any Load Line Certificate issued
under these rules.
12. Periodical inspection of vessels . — (1) Every vessel in respect of which a Load Line
Certificate is in force shall be periodically inspected by a surveyor in accordance with the
provisions of this rule in order to ensure that —
(a) the fittings and appliances for the protection of openings, the guard rails, the freeing
ports and the means of access to quarters of the crew in the vessel are in an effective
condition; and
(b) no changes have been made or taken place in the hull or superstructures of the vessel
which may render any inaccurate dat a on the basis of which freeboards have been
assigned to the vessel .
(2) Every a pplication for the periodical inspection shall be made by or on behalf of the
owner of the vessel to the Assigning Authority, who shall appoint a surveyor to carry
out the inspection.
(3) The surveyor may, in the course of any such inspection, require such tests to be
carried out as in his opinion, may be necessary to establish that the vessel complies
with the requirements of sub -rule (1).
(4) Periodical inspection s required under this rule shall be carried out annually within a
period of nine to fifteen months commencing on the date three months before and
concluding three months after , each anniversary of the date of completion of the
survey of the vessel leading to the issue of its current Load Line Certificate:
Provided that the Director -General may, if satisfied that the circumstances
so require , permit the annual inspection to be carried out before or after the
period specified therefor.
(5) The surveyor, if satisf ied after inspection that the vessel complies with the
requirements of sub -rule (1), shall, in the space provided for this purpose in the Load
Line Certificates, endorse a record of such inspection and certify —
(a) in the case of an International Load Line Cer tificate (1966), that the vessel was found
to comply with the relevant provisions of the Convention; and
(b) in the case of an India Load Line Certificate, that the vessel was found to comply with
the relevant provisions of these rules.
(6) Every such endorsement shall be dated and signed by the surveyor carrying out the
inspection, specifying the Assigning Authority on whose behalf the inspection was
carried out.
13. Exemptions . — (1) Neighbouring ports exemption: The Director -General may exempt any
vessel engaged so lely on international voyages between near neighbouring ports of two or
more States from the provisions of these rules and the Convention, provided that —
(a) the governments of the States in which such ports are situated are satisfied that
the sheltered nature or conditions of such voyages make it unreasonable or
impracticable to apply the provisions of the Convention; and
(b) the vessel remains engaged solely on such voyages.
(2) Novel vessel or experimental features exemption: The Director -General may
exempt any vessel which embodies features of a novel kind from any requirement of
these rules or the Convention, where the application of such requirement would
seriously impede research into the development of such features :
Provided that —
(a) the Director -General is sa tisfied that the vessel complies with safety
requirements adequate for the service for which it is intended; and
(b) such requirements ensure an overall level of safety not less than that provided under
the Convention; and
(c) the exemption is accep table to the Go vernments of the States intended to be visited
by the vessel.
(3) Single international voyage exemption: A vessel not normally engaged on
international voyages may, in exceptional circumstances, be exempted by the
Director -General from any requirement of t hese rules or the Convention for the
purpose of undertaking a single international voyage, provided the vessel complies
with safety requirements adequate for that specific voyage.
(4) Notification to the International Maritime Organi sation : The Director -General
shall communicate to the International Maritime Organi sation the particulars of every
exemption granted under sub -rules (1), (2), or (3), together with the reasons for
granting such exemption, for circulation to contracting governments.
(5) Condition s of exemption : Any exemption granted under this rule —
(a) shall be subject to such conditions as the Director -General may specify;
(b) may be limited in duration or voyage; and
(c) may be modified or cancelled if the Director -General is satisfied that the
conditions justifying the exemption no longer exist.
14. Exemption certificate . — (1) Where the Director -General exempts any vessel pursuant to
the provisions of the Act, the Director -General shall issue in respect of such vessel an
International Load Line Exemption Cer tificate in the form set out in the Fifth Schedule .
(2) Save in so far as the nature and terms of any such exemption require to the contrary
the provisions of rules 2 to 7 and of rules 9 to 12 shall apply to any vessel so
exempted and to any exemption certif icate so issued to any such vessel in the like
manner as they apply to any other vessel, except that —
(a) the references in the said rules to Assigning Authority shall be deemed to be
references to the Director -General ; and
(b) the surveyor, if satisfied after ins pection , that the vessel continues to comply with the
conditions subject to which the exemption was granted , shall endorse the exemption
certificate to that effect in the space provided and date and sign the endorsement.
15. Equivalents . — (1) The Director -General may permit any fitting, material, appliance or
apparatus to be fitted, or any other provision to be adopted on a vessel, in lieu of that required
by these rules or by the Convention, if satisfied, whether by trial or otherwise, that such fitting,
material, appliance, apparatus or provision is at least as effective as the specified requirement.
(2) Where any such equivalent is permitted under sub -rule (1), the Director -General may
impose such conditions as he considers necessary for ensuring an equivalen t level
of safety.
(3) The Director -General shall communicate to the International Maritime Organi sation,
for circulation to the contracting governments, the particulars of any equivalent
permitted under this rule, together with a report of any trials conducte d in respect
thereof.
16. Approvals for experimental purposes . — (1) The Director -General may grant specific
approvals for experimental purposes in respect of any vessel to which the Convention applies,
where such approval is considered necessary to facilitate the development of innovative
designs, arrangements, or safety features.
(2) Any approval granted under sub -rule (1) shall be subject to such conditions as the
Director -General may specify, to ensure that the overall level of safety of the vessel
is not redu ced.
(3) The Director -General shall communicate to the International Maritime Organisation,
for circulation to the contracting governments, the particulars of every approval
granted under this rule.
17. Repairs, alterations and modifications . — (1) A vessel that undergoes repairs, alterations,
modifications, or any related outfitting shall continue to comply with at least the requirements
previously applicable to that vessel under these rules and under the Convention and an
existing vessel shall not, as a rule, c omply to a lesser extent with the requirements for a new
vessel than it did before such repairs, alterations or modifications.
(2) Repairs, alterations and modifications of a major character, and any related outfitting,
shall comply with the requirements appl icable to a new vessel, insofar as the
Director -General considers reasonable and practicable, having regard to the extent
and nature of such work .
18. Zones and areas. — (1) Every vessel to which these rules apply shall comply with the
requirements relating to load lines and seasonal zones applicable to that vessel in the zones
and areas specified in the Sixth Schedule , being the zones and areas corresponding to Annex
II of the Convention.
(2) For the purposes of these rules, where a port stands on the boundary line between
two zones or areas specified in the Sixth Schedule , such port shall be regarded as
lying within the zone or area from or into which the vessel arrives or departs.
19. Submersion . — (1) Except as provided in sub -rules (2) and (3), a vessel to whi ch these
rules apply shall ensure that the appropriate load line corresponding to the season of the year
and the zone or area specified in the Sixth Schedule is not submerged at any time when the
vessel puts to sea, during the voyage, or on arrival.
(2) When a vessel is floating in fresh water of unit density (1.000), the applicable load
line may be submerged by the amount of the freshwater allowance shown on the
vessel’s Load Line Certificate and where the actual water density differs from unity,
an allowance shall be made proportional to the difference between 1.025 and the
actual density.
(3) When a vessel departs from a port situated on a river or inland waters, deeper loading
may be permitted corresponding to the weight of fuel, water and other consumable
mate rials required to be expended between the point of departure and the open sea.
(4) Nothing in this rule shall permit a vessel to exceed the freeboards assigned by the
Assigning Authority under the Act, except as expressly provided by the fresh water
allowance or the allowances in sub -rule (3).
20. Port State Control . — (1) A vessel other than an Indian Vessel holding a valid International
Load Line Certificate or International Load Line Exemption Certificate issued under the
Convention shall, when such a vessel is within any port or place in India, be subject to port
state control , which shall be limited to verifying that —
(a) the vessel is not loaded beyond the limits permitted by the certificate;
(b) the actual load line marks correspond with the certificate; and
(c) the vess el has not been so materially altered in respect of these matters that it is
manifestly unfit to proceed to sea without danger to human life.
(2) Where a vessel holds a valid International Load Line Exemption Certificate, control
exercised under sub -rule (1) shall be limited to verifying compliance with the
conditions stated in that certificate.
(3) Control under this rule shall be exercised only to the extent necessary to ensure that
the vessel does not sail until it can safely proceed to sea without danger to
passengers or crew.
(4) Where control under this rule results in any intervention, the authorised officer shall
immediately inform, in writing, the Consular or diplomatic representative of the State
whose flag the vessel is entitled to fly, stating the reasons f or the intervention and all
relevant circumstances.
(5) Nothing in this rule shall affect the powers exercisable by the Director -General or an
authorised officer under the Act in respect of vessels calling at Indian ports.
PART III
LOAD LINES AND MARKS
21. Appropriate marks. — For the purposes of this part, the expression "appropriate marks" in
relation to a vessel means the load lines required to be marked on the vessel under clause
(b) of sub -rule (2) of rule 7 and th e deck -line and load line mark.
22. Marking of load lines . — The owner of a vessel , on receipt from the Assigning Authority of
particulars and directions referred to in sub -rule (2) of rule 7, shall cause the appropriate ma rks
to be marked on each side of the vessel in accordance with the said directions and
requirements of this Part.
23. Deck -line. — (1) The deck -line shall consist of a horizontal line 300 millimetres in length and
25 millimetres in width , which shall be marked amidships on each side of the vessel in
accordance with the provisions of this rule so as to indicate the position of the freeboard deck.
Fig.1. Deck Line
(2) Subject to the provisions of sub -rule (3), the deck -line shall be marked in such a
position on the side of the vessel that its upper edge passes through the point
amidships , where the continuation outward --
(a) the upper surface of the freeboard deck ; or
(b) any sheathing of the freeboard deck,
intersects the outer surface of the shell of the vessel as shown in Figure 1.
(3) Where, in the opinion of the Assigning Authority, the design of the vessel or any
other circumstance renders it impracticable to mark the deck -line in accordance
with the provisions of sub -rule (2), the Assigning Authority may, in the directio ns
given under sub -rule (2) of rule 7 include a direction that the deck -line may be
marked by reference to another point on the side of the vessel which is as near as
practicable to the position referred to in s ub-rule (2) and t he location of the
reference point and the identification of the freeboard deck shall in all cases be
indicated on the International Load Line Certificate.
24. Load line mark . — The load line mark shall consist, as shown in Figure 2, of a ri ng 300
millimetres in outside diameter and 25 millimetres wide, intersected by a horizontal line 450
millimetres long and 25 millimetres wide the upper edge of which passes through the center
of the ring , which shall be marked amidships vertically below th e deck -line, so that except as
otherwise provided in rule 37, the distance from the center of the ring to the upper edge of the
deck -line is equal to the summer freeboard assigned to the vessel .
Fig.2. Load Line Mark and lines to be used with this mark
25. Load lines . — (1) Load lines as specified in sub -rule (2) and rule 26 shall be deemed to
indicate the maximum depth to which a vessel marked therewith may be loaded in the
circumstances specified in the Sixth Sc hedule in relation to appropriate load lines, zones,
areas and seasonal periods.
(2) Except as otherwise provided in rule 26 and rule 37, load lines shall consist as
show n in Figure 2 of horizontal lines each 230 milimetres in length and 25
millimetres in width extending forward or abaft of a vertical line 25 millimetres in
width marked 540 millimetres forward of the center of the ring of the load line mark
and at right an gles to that line.
(3) The individual load lines shall be —
(a) the summer load line, which shall extend forward of the aforesaid vertical line and the
marked "S" , which shall correspond horizontally with the line passing through the
center of the ring of the loa d line mark;
(b) the winter load line, which shall extend forward of the aforesaid vertical line and be
marked "W" ;
(c) the winter North Atlantic load line, which shall extend forward of the aforesaid vertical
line and be marked "WNA";
(d) the tropical load line, whic h shall extend forward of the aforesaid vertical line and be
marked "T" ;
(e) the fresh water load line, which shall extend abaft the aforesaid vertical line and be
marked "F"; and
(f) the tropical fresh Water load line, which shall extend abaft the aforesaid verti cal line
and be marked "TF";
(4) The maximum depth of loading referred to in sub -rule (1) shall be the depth
indicated by the upper edge of the appropriate load line specified in sub -rule (2).
26. Timber load lines . — (1) Timber load lines, as shown in Figure 3, shall consist of horizontal
lines of the dimensions specified in respect of such lines in rule 25, extending abaft or forward
of a vertical line of the dimensions specified in respect of such a line in that rule, marked 540
millimetres abaft the center of the ring of load line mark and at right angles of that line.
(2) Individual timber load lines shall be as follows: -
(a) the summer Timber Load Line, which shall extend abaft the said vertical line and be
marked LS;
(b) the winter Load Line , which shall extend abaft the said vertical line and be marked LW;
(c) the winter North Atlantic Timber Load Line which shall extend abaft the said vertical
line and be marked LWNA;
(d) the tropical timber Load Line , which shall extend abaft t he said vertical line and be
marked LT ;
(e) the fresh water timber Load Line , which shall extend forward of the said vertical line
and be marked LTF LF; and
(f) the tropical fresh water timber Load Line , which shall extend forward of the said vertical
line and be marked LLF LTF; and
(3) The maximum depth of loading referred to in sub -rule (1) of rule 25 shall be the
depth indicated by the upper edge of the appropriate timber load line.
27. Appropriate load line . — The appropria te load line in respect of a vessel at any particular
place and time shall be ascertained in accordance with the provisions of the Sixth Schedule .
28. Position of load lines . — Each load line required to be marked on a vessel , shall be marked
in such a positi on of each side of the vessel such that the distance measured vertically
downwards from the upper edge of the deck -line to the upper edge of the load line is equal to
the freeboard assigned to the vessel which is appropriate to that load line.
29. Methods of m arking . — (1) The appropriate marks shall be marked on each side of the
vessel in accordance with the requirements of sub -rules (2) and (3) in such a manner as to
be plainly visible.
(2) If the sides of the vessel are of —
(a) metal, the appropriate marks shall b e cut in, center punched or welded;
(b) wood, the marks shall be cut into the planking to a depth of not less than 3 millimetres;
(c) any other materials to which the foregoing method of marking cannot be effectively
applied, the marks shall be permanently affixe d to the sides of the vessel by bonding
or some other effective method.
(3) The appropriate marks shall be painted in white or yellow , if the background is
dark, and in black if the background is light .
30. Authorisation of removal etc. of appropriate marks . — After the appropriate marks have
been marked on a vessel, such marks shall not be concealed, defaced or obliterated and shall
not be removed or altered , except with the prior approval of the Assigning Authority.
31. Mark of Assigning Authority . — (1) The mark o f the Assigning Authority specified in sub -
rule (2) shall be marked on each side of the vessel in a position alongside the load line mark ,
either above the horizontal line forming part of that mark or above and below it.
(2) The Assigning Authority's mark sha ll consist of not more than four initials to identify
their name, each measuring approximately 115 millimetres in height and 75
millimetres in width .
PART IV
CONDITIONS OF ASSIGNMENT
32. Assignment of freeboards . — (1) Except as otherwise provided in sub -rules (2) an d (3),
every vessel to which freeboards are to be assigned under these rules , shall comply with the
requirements applicable to it unde r Part I of the First Schedule .
(2) Every vessel ,—
(a) being a vessel of Type 'A' , to which requirements of Part III of the First Schedule apply ;
(b) being a vessel of Type 'B' , to which the requirements of Part IV of the First Schedule
apply ; or
(c) being a vessel to be assigned with timber freeboards, to which the requirements of
Part V of the First Schedule apply ;
shall comply with th e requirements of the respective Part of the First Schedule and
also the requirements of Part II of the said Schedule , except in so far as the
compliance of Part III, IV or V , as the case may be, of the said Schedule may
otherwise require.
(3) Every existing vessel , not being a vessel to which freeboards are required to be
assigned in accordance with sub -rule (1) of rule 36 read with the proviso to sub -rule
(2) thereof, shall comply with such of the requirements rele vant to the assignment of
freeboards to the vessel , as were applicable to it under the law in force immediately
prior to the coming into force of these rule s.
33. Compliance with conditions of assignment . — (1) Except as otherwise provided in sub -
rule (2), a vessel shall be deemed to be not complying with the conditions of assignment ,—
(a) if at any time after the assignment of freeboards to it, there has been any alteration of
the hull superstructures, fitting or appliances of the vessel to such extent that eithe r—
(i) any requirement applicable to the vessel under rule 32 is not complied with;
or
(ii) the record of conditions of assignment made in relation to the vessel
pursuant to rule 34 is rendered inaccu rate in a material respect ; or
(b) if the record of conditions of as signment is not kept on board the vessel in accordance
with sub -rule ( 3) of rule 34.
(2) Irrespective of any alteration in the vessel as specified in clause (a) of sub -rule (1), a
vessel shall be deemed to be complying with the conditions of assignment , if either—
(a) fresh freeboards appropriate to the condition of the vessel after the alterations have
been assigned to it and it has been marked with load line s and a fresh certificate h as
been issued to its owner; or
(b) the alteration has been inspected by a surveyor on behalf of the Assigning Authority,
and the Assigning Authority is satisfied that the alteration is not such as to require any
change in the freeboards assigned to the vessel and full particulars of the alteration
together with date and place of inspecti on have been endorsed by the surveyor on the
record of conditions of assignment.
34. Record of conditions of assignment . — (1) The record of conditions of assignment in
respect of the hull, superstructure fittings and appliances of a vessel to which freeboard s are
assigned shall be in the form set out in the Fourth Schedule , or a Form as near thereto as
circumstances permit, and shall contain the particulars required by that Form and s uch
particulars may be furnished by attaching to the record a copy of the report of survey and
specifying in the record passages from that report in which the relevant particulars are gi ven.
(2) The record shall be completed by the surveyor carrying out the survey of the vessel
pursuant to rule 5 and shall be furnished by him to the Assigning Authority in
accordance with the provisions of rule 6 and t wo copies of the record shall be sent
by the Assigning Authority to the owner of the vessel together with the particulars
and directions requi red to be so furnished by rule 7.
(3) One copy of the record of conditions of assignment , particulars and directions
furnished by the Assigning Authority to the owner of the vessel shall, at all times
be kept on bo ard the vessel in the cus tody of the master of the vessel .
PART V
FREE BOARDS
35. Types of freeboards . — The freeboards assignable to any vessel under the rule s shall be —
(1) summer freeboard;
(2) tropical freeboard;
(3) winter freeboard;
(4) winter north atlantic freeboard;
(5) fresh water freeboard;
(6) tropical fresh water freeboard;
(7) summer timber freeboard;
(8) winter timber freeboard;
(9) winter north atlantic timber freeboard;
(10) tropical timber freeboard;
(11) fresh water timber freeboard; and
(12) tropical fresh water timber freeboard.
36. Determination of freeboards . — Except as otherwise provided in rule 37,
(a) the freeboards to be assigned to a new vessel shall be determined in accordance with
the provisi ons of the Second Schedule ; and
(b) the freeboards to be assign ed to an existing vessel shall be determined in
accordance with the provisions applicable in that behalf to the vessel under the rules
in force immediately prior to the coming into force of these rule s :
Provided that if an existing vessel has been so con structed or altered so as
to comply with the requirements of the First Schedule applicable to a new
vessel of its type, and an application is made in respect of such vessel for
the assignment of freeboards determined in accordance with the provisions
of the Second Schedule , such freeboards may be assigned to the vessel .
37. Exceptions regarding freeboards . — (1) Greater than minimum freeboard : Any vessel may,
on the application of the owner made in that behalf be assigned greater than the minimum
freeboard dete rminable in accordance with rule 36, subject to the following conditions,
namely —
(a) on survey of the vessel pursuant to rule 5, the Assigning Authority is satisfied that the
vessel comp lies with the requirements o f--
(i) Part IV of these rules ;
(ii) the First Schedule , other than those relating to stability;
(iii) Part VI of these rules in so far as they relate to stability; and
(iv) the Third Schedule in so fa r as they relate to stability ;
(b) the vessel is not a ssigned with timber fr eeboards ;
(c) if the greater than minimum freeboard to be assigned to the vessel is such that the
position of load lines on the sides of the vessel appropriate to that freeboard would
correspond to, or be lower than, the position at which the lowest of the loa d lines
appropriate to minimum freeboards for that vessel would have been marked ,—
(i) the load line appropriate to the greater than minimum freeboard and the
fresh water freeboard shall only be m arked on the sides of the vessel ;
(ii) the load line appropriate to the greater than minimum freeboard shall be
called the "All season load line" which shall consist of horizontal line
intersecting the load line mark and such ma rk shall be placed
accordingly;
(iii) the vertical line specified in the relevant marking provisions in sub -rule
(2) of rule 25 shall be omitted; and
(iv) subject to sub -clause (iii), the fresh water load line shall be specified in
sub-rule (2) of rule 25 and shall be marked accordingly .
(2) Lesser than minimum freeboard: On an application made in this behalf by t he owner
of a hopper type vessel , which is engaged on voyages other than international
voyages during the course of which it does not go farther than 20 miles from the
nearest land at any time, the Director -General may, subject to the conditions set out
in Part IV of the Second Schedule , assign such vessel lesser than minimum
freeboard reduced to —
(a) five-eighth of the appropriate minimum freeboard determinable in accordance with the
Table B set out in Par t V of the Second Schedule ; or
(b) one-half of the approp riate minimum freeboard determinable in accordance with sub -
paragraph (5) or sub -paragraph (6) of paragraph 19 18 of the Second Schedule :
Provided that such freeboard shall not in either case be less than 150 millimetres.
38. Special position of deck -line and correction of free -board . — In any case , where the deck -
line is to be marked on the sides of a vessel in accordance with sub -rule (3) of rule 23, the
freeboards to be assigned to the vessel shall be corrected t o allow for the vertical distance by
which the position of the deck -line is altered by virtue of that sub -rule and t he location of the
point by reference to which the deck -line has been so marked and the identity of the deck
which has been regarded as the freeboard deck , shall be specified in the Load Line Certificate
issued in respect of such vessel .
PART VI
STABILITY AND LOADING
39. Information as to stability of vessels . — (1) The owner of every vessel to which freeboards
are assigned under these rules shall, for t he guidance of the master of the vessel , provide
information relating to the stability of the vessel in accordance with the provisions of this rule .
(2) The information under sub –rule (1) shall include stability particulars appropriate to
the vessel in respe ct of all matters specified in Part II of the Third Schedule and the
method of computation and the form of the particulars shall, so far as practicable, be
be in accordance with Part III of that Schedule or equivalent thereto.
(3) The stability characteristics shall comply with the criteria specified in Part I of the
Third Schedule and the International Code on Intact Stability, 2008 (IS Code 2008) ,
as amended from time to time .
(4) Subject to the provision s of sub -rule ( 5), the information shall, when first supplie d, be
based on the determination of stability by means of an inclining test which shall,
unless the Assigning Authority otherwise permits, be carried out in the presence of a
surveyor appointed by the Director -General and t he information first supplied sha ll
be replaced by fresh information whenever its accuracy is materially affected by
alteration of the vessel , which shall, if the Director -General so requires be bas ed on
a further inclining test.
(5) The Assigning Authority may---
(a) in the case of any vessel , permit the information to be based on the determination of
stability of sister vessel by means of an inclining test; or
(b) in the case of any vessel specially designed for the carriage of liquids or ore in bulk ,
dispense with the inclining test if from the inf ormation available in respect of similar
vessel s, the Director -General is satisfied that the vessel proportions and arrangements
are such as to ensure adequate stability in al l probable loading conditions.
(6) The information, and any fresh information to repl ace the same pursuant to the
provisions of sub -rule ( 4), shall, before issue to the master, be submitted by or on
behalf of the owner to Assigning Authority for his approval, together with a copy
thereof for his record, and shall incorporate such additions and amendments , as the
Director -General may i n any particular case require.
(7) Information provided pursuant to this rule shall be furnished by the owner of the
vessel to the master in the form of a book , which shall be kept on board the vessel
at all times in the cus tody of the master of the vessel .
(8) Where any alterations are made to a vessel so as to materially affect the loading or
stability information supplied to the master, amended information shall be provided ,
and if necessary, the vessel shall be re -inclined.
40. Information as to loading and ballasting of vessels . — (1) The owner of any vessel , being
a vessel of more than 150 metres in length specially designed to carry liquids or ore in bulk,
to which freeboards are assigned under these rules shall, for the information of the master of
the vessel , provide information relating to the loading and ballasting of the vessel in
accordance with the provisions of sub -rules (2) and (3).
(2) The information under sub -rule (1) shall consist of working instructions sp ecifying in
detail the manner in which the vessel is to be loaded and ballasted , so as to avoid
the creation of Unacceptable stresses in its structure and shall indicate the maximum
maximum stresses permissibl e for the vessel .
(3) The provisions of sub -rule ( 6) of rul e 39 shall apply in the like manner to the
information required under sub -rule (1) and the i nformation duly approved by the
Assigning Authority shall be contained in the book to be furnished to the master of
the vessel pursuant to the provisions of sub -rule (7) of rule 39, so however, that
information required by rule 39 and this rule shall be shown separately in the book
under separate headings specifying the number and heading of each rule.
FIRST SCHEDULE
CONDITIONS OF ASSIGNMENT
(See Rule 32)
PART I
GENER AL
1. Definitions and Interpretation . —
A. Definitions : (1) "amidship" means at the middle of the length (L);
(2) "block co -efficient" or the symbol (C b) means block co -efficient obtained by the
formula
Cb = Δ / (L.B.d 1)
where, Δ is volume of the moulded displacement of the vessel , excluding bossing, in
a vessel with metal shell or, as the case may be, the volume of displacement to the
outer surface of the hull in a vessel with a shell of any other material , both taken at a
moulded draught of d 1 ; d1 is 85 per cent of the least moulded depth;
When calculating the block coefficient of a multi -hull craft, the full breadth (B) as
defined in sub -paragraph (3) is to be used and not the breadth of a single hull ;
(3) "breadth" or the symbol (B) means the maximum breadth of the vessel , measured
amidships to the moulded line of the frame in a vessel with a metal shell, or as the
case may be, to the outer surface of the hull in a vessel with a shell of any other
material;
(4) “bridge” is a superstructure which does not extend to either the forward or after
perpendicular ;
(5) "depth for freeboard" or the symbol (D) –
(a) in relation to a vessel other than these referred to in clause (b) m eans the moulded
depth of the vessel amidships plus the thickness of the free board deck
stringer plate, where fitted, and
(b) in relation to a vessel having a rounded gunwale with a radius greater than four per
cent. .. of the breadth of the vessel (B), or in relation to a vessel having topsides of
unusual form means: the depth for freeboard of a vessel having midship section with
vertical topsides and with the same round of beam and area of top side section equal
to that provided by the actual midship section;
(6) "enclosed superstructure" means a superstructure with enclosing bulk heads of
efficient construction, access openings in such bulkheads being fitted with ails and
watertight doors and all other openings in sides and ends of such superstru ctures
being fitted with efficient watertight means of closing but does not include a bridge or
a poop fulfilling these requirements unless access is provided by which the crew can
reach machinery and other working spaces within the bridge or poop by alter native
means which are available for the purpose at all times when access openings in the
bulkheads of the bridge or poop are closed;
(7) "flush deck vessel " means a vessel which has no superstructures on a free board
deck;
(8) "freeboard" means the distance meas ured vertically downwards amidships from the
upper edge of the deckline described in rule 23 to the position at which the upper
edge of the appropriate load line mark lies;
(9) "freeboard deck" means the deck from which the freeboard is assigned being either —
(a) the uppermost complete deck exposed to whether and sea, which has permanent
means of closing all openings in the weather part thereof and below which all openings
in the sides of the vessel are fitted with permanent means of watertight closing. In a
vessel having a discontinuous freeboard deck, the lowest line of the exposed deck and
the continuation of that line parallel to the upper part of the deck is taken as the
freeboard deck; or
(b) on the application of the owner and subject to the approval of the Dir ector General, a
deck lower than that described in clause (a), provided it is a complete and permanent
deck continuous in the fore and aft direction at least between the machinery space and
peak bulkheads and continuous athwartships ; and
(i) when a lower deck is stepped the lowest line of the deck and the
continuation of that line parallel to the upper part of the deck is taken as
the freeboard deck.
(ii) when a lower deck is designated as the freeboard deck, that part of the
hull which extends above the freeboard d eck is treated as a
superstructure so far as concerns the application of the conditions of
assignment and the calculation of freeboard. It is from this deck that the
freeboard is calculated.
(iii) when a lower deck is designated as the freeboard deck, such deck as a
minimum shall consist of suitably framed stringers at the vessel sides
and transversely at each watertight bulkhead which extends to the upper
deck, within cargo spaces.
The width of these stringers shall not be less than can be conveniently fitted
having regard to the structure and the operation of the vessel . Any
arrangement of stringers shall be such that structural requirement can also
be met.
(c) Discontinuous freeboard deck, stepped freeboard deck.
(i) Where a recess in the freeboard deck extends to the sides of the vessel
and is in excess of one metre in length, the lowest line of the exposed
deck and the continuation of that line parallel to the upper part of the deck
is taken as the freeboard deck
(ii) Where a recess in the freeboard deck does not extend t o the sides of the
vessel , the upper part of the deck is taken as the freeboard deck.
(iii) Recesses not extending from side to side in a deck below the exposed
deck, designated as the freeboard deck, may be disregarded, provided all
openings in the weather deck are fitted with weather tight closing
appliances.
(iv) Due regard shall be given to the drainage of exposed recesses and to free
surface effects on stability.
(v) Provisions of sub -clause (i) through (iv) are not intended to apply to
dredgers, hopper barges or oth er similar types of vessel s with large open
holds, where each case requires individual consideration.
(10) “full superstructure” is a superstructure which, as a minimum, extends from the
forward to the after perpendicular ;
(11) “forecastle” is a superstructure whic h extends from the forward perpendicular aft
to a point which is forward of the after perpendicular , which may originate from a
point forward of the forward perpendicular ;
(12) "height of superstructure" means the least vertical height measured at side from
the top of the superstructure deck beams to the top of the freeboard deck beams;
(13) "length" or the symbol (L) means ninety -six per cent. .. of the total length on a water
line at eighty -five per cent of the least moulded depth measured from top of the keel,
or the length from the force side of the stem to the axis of the rudder stock on the
water line if that be greater .
For vessel s without a rudder stock, the length (L) is to be taken as 96% of the
waterline at 85% of the least moulded depth.
Where the stem c ontour is concave above the waterline at 85% of the least moulded
depth, both the forward terminal of the total length and the fore -side of the stem
respectively shall be taken at the vertical projection to that waterline of the aftermost
point of the stem contour
In vessel s designed with a rake of keel the waterline on which this length is measured
shall be parallel to the designed waterline at 85% of the least moulded depth Dmin,
found by drawing a line parallel to the keel line of the vessel (including skeg) tangent
to the moulded sheer line of the freeboard deck. The least moulded depth is the
vertical distance measured from the top of the keel to the top of the freeboard deck
beam at side at the point of tangency.
(14) "length of a superstructure" means le ngth of the part of the superstructure which
lies within the length (L) ;
(15) "moulded depth" in relation to a vessel means the vertical distance measured form
the top of the keel to the top of the freeboard deck beam a side, provided that, in the
case of a woo d or composite vessel , it shall be measured from the lower edge of keel
rabbet. Where the form at the lower part of the midship section is of a hollow
character, or where thick garboards are fitted, the distance is measured from the
point where the line of the flat of the bottom continued inwards cuts the side of the
keel;
(a) in vessel s having rounded gunwale, it shall be measured to the point of intersection of
the moulded lines of the deck and side plating, the lines extending as though the
gunwale were of angular design;
(b) in vessel s where the freeboard deck is stepped and the raised part of the deck extends
over the point at which the moulded depth is to be determined, the moulded depth
shall be measured to a line of reference extending from the lower part of the deck long
a line parallel with the raised part of the deck.
(16) "perpendiculars" means the forward and after perpendicular taken at the forward
and the after end of the length (L);
(17) “poop” is a superstructure which extends from the after perpendicular fo rward to a
point which is aft of the forward perpendicular. The poop may originate from a point
aft of the aft perpendicular ;
(18) “raised quarterdeck” is a superstructure which extends forward from the after
perpendicular, generally has a height less than a no rmal superstructure, and has an
intact front bulkhead (side scuttles of the non -opening type fitted with efficient
deadlights and bolted man hole covers). Where the forward bulkhead is not intact
due to doors and access openings, the superstructure is then to be considered as a
poop;
(19) "superstructure" means a decked structure on the freeboard deck, extending from
side to side plating not bein g inboard of the shell plating more than four per cent of
the breadth (B), and includes a raised quarter deck;
(20) “super structure deck” is a deck forming the upper boundary of a superstructure ;
(21) "timber deck cargo" means a cargo of timber other than wood pulp or similar cargo
carried on uncovered part of a freeboard or super - structure deck ;
(22) "Type ‘A’ vessel " and " Type ‘B’ vessel " means vessel s as interpreted in this
Schedule ;
(23) "watertight" in relation to any part of vessel below the freeboard deck means
capable of preventing the passage in any direction of water under pressure or
otherwise as the case may be having regard to the functional requirement of that part
of the vessel ;
(24) "weathertight" in relation to any part of vessel above the freeboard deck means
that water cannot penetrate through that part into the vessel under any condition of
sea and weather encountered at sea .
(25) “well” is any area on the deck exposed to the weather, where water may be
entrapped. Wells are considered to be deck areas bounded on two or more sides by
deck structures.
B. Interpretation . — Positions 1 and 2: For the purpose of this Schedule two position s
of hatchways, doorways and ventilators are defined as follows:
Position 1: Upon exposed freeboard and raised quarter decks, and upon exposed
superstructure decks situated forward of a point located a quarter of the vessel 's
length from the forward perpen dicular.
Position 2: Upon exposed superstructure decks situated abaft a quarter of the
vessel ’s length from the forward perpendicular and located at least one standard
height of superstructure above the freeboard deck.
2. Types of vessel s. — For the purpose of freeboard computation, vessel s shall be divided into
type ‘A’ and type ‘B’.
(1) Type ‘A’ vessel s: A type ‘A’ vessel is one which:
(a) is designed to carry only liquid cargoes in bulk;
(b) has a high integrity of the exposed deck with only small access openings to c argo
compartments, closed by watertight gasketed covers of steel or equivalent material;
and
(c) has low permeability of loaded cargo compartments.
(2) Type ‘B’ vessel s: All vessel s which do not come within the provisions regarding type
‘A’ vessel s in sub -paragra ph (1) shall be considered as type ‘B’ vessel s.
PART II
GENERAL CONDITIONS OF ASSIGNMENT FOR ALL VESSEL S
3. Strength of vessel . — The design and the condition of the vessel shall be such that her
general structural strength shall be sufficient for the freeboard a ssigned to her.
4. Stability of vessel . — The design and the construction of the vessel shall be such as to
ensure that her stability in all probable loading conditions will be sufficient for the freeboards
to be assigned to her for the intended services in accordance with the criteria of stability and
methods of calculations l aid down in the Sixth Schedule .
5. Weathertight Doors . — (1) All access openings in bulkheads at ends of enclosed
superstructure or on any other bulkheads or sides and ends of casings whe re such
weathertight doors are required to be fitted shall be fitted with doors of steel or other equivalent
material, permanently and strongly attached to the bulkhead, and framed, stiffened and fitted
so that the whole structure is of equivalent strength to the unpierced bulkhead and
weathertight when closed. The means for securing these doors weather tight shall consists
of gaskets and clamping devices or other equivalent means and shall be permanently
attached to the bulkhead or to the doors themselves and doors shall be so arranged that they
can be operated f rom both sides of the bulkhead.
(2) Unless otherwise permitted by the Assigning Authority , doors shall open outwards to
provide additional security against the impact of the sea.
(3) Except as otherwise p rovided in these rules, the height of the sills of access openings
in bulkheads at the ends of enclosed superstructure shall be at least 380 millimetres
above the deck.
(4) Portable sills shall be avoided. However, in order to facilitate the loading/unloading
of heavy spare parts or similar, Portable sills may be fitted on the following conditions:
(a) they shall be installed before the vessel leaves port; and
(b) they shall be gasketed and fastened by closely spaced through bolts.
6. Superstructure end bulkheads . — Bulkheads at exposed ends of enclosed superstructures
shall be of efficient construction.
7. General requirements of hatchways . — (1) The construction and the means for securing
the weathertightness of cargo and other hatchways in positions 1 and 2 shall be at least
equivalent to the requirements of paragraphs 8 and 9.
(2) Coamings and hatchway covers to exposed hatchways on decks above the
superstructure deck shall be of suc h construction and be fitted with such means for
securing the weathertightness of the hatchway as are adequate having regard to its
position.
8. Hatchways closed by Portable covers and secured weathertight by tarpaulins and
battening devices . — (1) Hatchways coamings : Every hatchway shall have a coaming of
substantial construction. The coaming shall be constructed of mild steel unless otherwise
permitted. The height of the coaming above the deck shall be at least —
600 millimetres if the hatchway is in posi tion 1.
450 millimetres if the hatchway is in Position 2.
(2) Hatchway covers:
(a) The width of each bearing surface for hatchway covers sh all be at least 65 millimetres.
(b) Where the covers are made of wood, the finished thickness shall be at least 60
millimetres in association with a span of not more than 1.5 metres and the thickness
of cover for larger spans shall be increased in the ratio of 60 mill imeters to a span of
1.5 metres. The ends of wooden covers shall be protected by galvanized s teel bands
efficientl y secured.
(c) Where the covers are made of mild steel the strength shall be calculated with assumed
loads in accordance with the requirements of sub -clause (i) of clause (b) of sub
paragraph (2) of paragraph 9 through sub-clause (iii) of the said clause and t he product
of the maximum stress thus calculated and the factor 1.25 shall not exceed the
minimum upper yield point strength of the material. Covers shall also be so designed
as to limit the deflection to not more than 0.0056 ti mes the span under these lo ads.
(3) Portable beams : Where portable beams for supporting hatchway covers are made
of mild steel, the strength of such beams shall be calculated with the assumed load
not less than3.5t/sq.m on hatchways in position 1 and not less than 2.6t/sq.m on
hatchwa ys in position 2 and the product of the maximum stress thus calculated and
the factor 1.47 shall not exceed the minimum upper yield point strength of the
material.. Further, such beams shall also be so designed as to limit the deflection to
not more than 0.0044 times the span under the above assumed loads.
The assumed loads on hatchways in position 1 may be reduced to 2t/sq.m for
vessel s 24m in length and shall be not less than 3.5t/sq.m for vessel s 100m in
length. The corresponding loads on hatchways in p osition 2 may be reduced to
1.5t/sq.m and 2.6t/sq.m, respectively. In all cases values at intermediate lengths
shall be obtained by linear interpolation.
(4) Pontoon covers:
(a) Where pontoon covers of mild steel are used in place of portable beams and covers,
their strength shall be calculated in accordance with the requirements sub-clause (i) of
clause (b) of sub paragraph (2) of paragraph 9 through sub-clause (iii) of the said
clause and the product of the maximum stress thus calculated and the factor 1.47 s hall
not exceed minimum ultimate strength of the material. Further such beams shall also
be so designed as to limit the deflection to not more than 0.0044 times the span.
(b) Mild steel plating forming the tops of such covers shall be not less in thickness th an 1
per cent. .. of the spacing of the stiffeners or 6 millime tres, whichever is the greater.
(5) Carriers or sockets: Carriers or sockets for por table beams shall be of substantial
construction and shall provide means for the efficient fitting and securing of the
beams. Where rolling types of beams are used, the arrangements shall ensure that
the beams remain properly in positi on when the hatchway is closed.
(6) Cleats: Cleats shall be set to fit the taper of the wedges. They shall be at least 65
mm wide and spac ed not more than 600 mm centre to centre; the cleats along each
side or end shall be not more than 150 mm from the hatch corners.
(7) Battens and wedges: Battens and wedges shall be efficient and in good
condition. Wedges shall be of tough wood or other equiv alent material. They shall
have a taper of not more than 1 in 6 and shall be not less than 13 millimetres thick at
the toes.
(8) Tarpaulins: At least two layers of tarpaulin in good condition shall be provided for
each hatchway in position 1 or 2. The tarpau lins shall be waterp roof and of ample
strength. They shall be of a material of at least as approv ed standard weight and
quality.
(9) Security of hatchway covers: For all hatchways in position 1 or 2 steel bars or other
equivalent means shall be provided in or der to efficiently and independently secure
each section of hatchway covers after the tarpaulins are battened down. Hatchway
covers of more than 1.5 metres in length shall be secured by at least two such
securing appliances.
(10) Material: If the material of co nstruction of any hatchway coamings, covers and
beams are made of other than mild steel the coamings covers and beams made from
such materials shall be of equivalent strength and stiffness as those specified i n this
Schedule for mild steel.
9. Hatchways close d by weathertight covers of steel or other equivalent material fitted
with gaskets and clamping devices . — (1) Hatchway coamings:
(a) The coamings of hatchways shall be of substantial construction. The height o f
coamings shall be at least.
600 millimetres in Position 1
450 millimetres in Position 2
(b) Provided if the Director -General so approves the height of the coaming may be
reduced or in exceptional circumstances the coaming may be dispensed with, subject
to the condition that the safety of the vessel will no t thereby by impaired in
consequence in the worst sea and weather condition likely to be enco untered by the
vessel in service.
(2) Weathertight Covers:
(a) The strength of weather -tight covers, made of mild steel shall be calculated with an
assumed load in accord ance with the rules as stated below
(b) Hatch cover minimum design loads
(i) For vessel s of 100 m in length and above:
(A) Position 1 hatch covers located in the forward quarter of the vessel s
length shall be designed for wave loads at the forward perpendicular,
calculated from the following equation:
Load = 5 + (L H-100)a in t/m2
where:
LH is L for vessel s of not more than 340 m but not less than 100 m in
length and equal to 340 m for vessel s of more than 340 m in length;
L is the length of the vessel (meters),
a is given in Table 3, and reduced linearly to 3.5 t/m2 at the end of the
forward quarter’s length, as shown in Table 4. The design load used
for each hatch cover panel shall be that determined at its midpoint
location.
(B) All other position 1 hatch covers sh all be designed to 3.5 t/sq.m.
(C) Position 2 hatch covers shall be designed to 2.6 t/sq.m.
(D) Where a position 1 hatchway is located at least one superstructure
standard height higher than the freeboard deck, it may be designed to
3.5 t/ sq.m.
Table 3
a
Type ‘B’ freeboard vessel s 0.0074
Vessel s assigned reduced freeboard by
sub- paragraph 4(5) or (6) of Second
Schedule 0.0363
(ii) For vessel s 24 m in length:
(E) Position 1 hatch covers located in the forward quarter of the vessel ’s
length shall be designed for wave loads of 2.43t/sq.m at the forward
perpendicular and reduced linearly to 2t/sq.m at the end of the forward
quarter’s length as shown in Table 4. The design load used for each
hatch cover panel shall be that determined at its midpoint location.
(F) All oth er position 1 hatch covers shall be designed to 2t/sq.m.
(G) Position 2 hatch covers shall be designed to 1.5t/sq.m.
(H) Where a position 1 hatchway is located at least one superstructure
standard height higher than the freeboard deck, it may be designed to
2t/sq. m.
(iii) For vessel s between 24 m and 100 m in length, and for positions between
FP and 0.25L, wave loads shall be obtained by linear interpolation of the
values shown in Table 4.
Table 4
Longitudinal Position
FP 0.25L Aft of 0.25L
L>100 m
Freeboard beck Equation in 9(2)(b) 3.5 t/m2 3.5 t/m2
Superstructure deck 3.5 t/m2 2.6 t/m2
L=100 m
Freeboard deck 5 t/m2 3.5 t/m2 3.5 t/m2
Superstructure deck 3.5 t/m2 2.6 t/m2
L= 24 m
Freeboard deck 2.43 t/m2 2 t/m2 2 t/m2
Superstructure deck 2 t/m2 1.5 t/m2
(iv) All hatch covers shall be designed such that:
(I) the product of the maximum stress determined in accordance with the
above loads and the factor of 1.25 does not exceed the minimum upper
yield point strength of the material in tension and the critical buckling
strength in compression;
(J) the deflection is limited to not more than 0.0056 times the span;
(K) steel plating forming the tops of covers is not less in thickness than 1%
of the spacing of stiffeners or 6 mm if that be greater; and
(L) an appropriate corrosion margin i s incorporated.
(c) Means of securing weather tightness: The hatch covers shall be made weathertight by
fitting gaskets and clamping devices. Hatch covers which rest on coamings shall be
located in their closed position by means capable of withstanding horizon tally acting
loads in any sea conditions. Any equivalent arrangements, if adopted, shall ensure
that the tightness can be maintained in any sea conditions and for the purpose tests
for tightness shall be required at the initial survey, and may be required at periodical
Surveys and at annual inspections or at more frequent intervals.
10. Machinery space openings . — (1) Machinery space openings in position 1 or 2 shall be
properly framed and efficiently enclosed by steel casing of ample strengths account being
taken of the extent, if any, to which the casing is protected by other structures.
(2) Every doorway in such casings shall be fitted with doors complying with paragraph 5
having sills of at least the following heights:
600 millimetres above the deck if the opening is in Position 1
380 millimetres above the deck if the opening I in Position 2.
Other openings in such casing shall be fitted with permanently attached covers or
steel, by which it can be closed weather ti ght and except in the case of a cover
consisting of a plate secured by bolts is capable of being operated from both sides.
(3) Where machinery casings are not protected by other structures, double doors (i.e.
inner and outer doors complying with the requireme nts of sub -paragraph 5(1) of this
Schedule shall be required for vessel s assigned freeboards less than those based
on Table B provided in Part V of the Second Schedule . An inner sill of 230 mm in
conjunction with the outer sill of 600 mm shall be provided.
(4) Coamings of any fiddly , funnel or machinery space ventilators in a exposed position
on the freeboard or super -structure deck shall be as high above the deck as
practicable having regard to its position and adequate protection from the sea. In
general, ven tilators necessary to continuously supply the machinery space shall have
coamings of sufficient height to comply with sub-paragraph (5) of paragraph 12 ,
without having to fit weathertight closing appliances. Ventilators necessary to
continuously supply the emergency generator room, if this is considered buoyant in
the stability calculation or protecting opening leading below, shall have coamings of
sufficient height to comply with sub-paragraph (5) of paragraph 12 , without having to
fit weathertight closing appliances.
(5) Where due to vessel size and arrangement this is not practicable, lesser heights for
machinery space and emergency generator room ventilator coamings, fitted with
weathertight closing appliances in accordance with sub-paragraph (4) of paragrap h
12, may be permitted in combination with other suitable arrangements to ensure an
uninterrupted, adequate supply of ventilation to these spaces.
(6) Fiddly openings shall be fitted with strong covers of steel or other equivalent material
permanently attached in their proper positions and capable of being secured
weathertight.
11. Miscellaneous openings in freeboard and superstructure decks . — (1) Manholes and
flush scuttles in position 1 or 2 or within superstructure other than enclosed superstructure
shall be cl osed by substantial covers capable of being made watertight. Unless secured by
closely spaced bolts, the covers shall be made permanen tly attached.
(2) Openings in a deck other than a hatchway, machinery space opening, manhole and
flush scuttle, --
(a) if situate d in the freeboard deck shall be protected by an enclosed superstructure or
by a deck -house or companion way equivalent in strength and weather -tightness to an
enclosed superstructure ;
(b) if situated in an exposed position in a deck over an enclosed superstr ucture and giving
access to space within that superstructure or on top of a deckhouse on the freeboard
deck and giving access to space below the free board deck, shall be protected by an
efficient deckhouse or companionway fitted with weathertight doors in accordance with
paragraph 5;
(c) if situated in an exposed position in a deck above the deck over an enclosed
superstructure and giving access to space within that superstructure, shall be
protected either in accor dance with the requirements of clause (b) or to such lesser
extent as having regard to its position.
(3) Openings in the top of a deckhouse on a raised quarterdeck or superstructure of less
than standard height, having a height equal to or greater than the sta ndard
quarterdeck height, shall be provided with an accep table means of closing but need
not be protected by an efficient deckhouse or companionway as defined in this
paragraph , provided that the height of the deckhouse is at least the standard height
of a superstructure. Openings in the top of the deck house on a deck house of less
than a standard superstructure height may be treated in a similar manner.
(4) Doorways in such efficient deckhouse companionway or enclosed superstructure as
referred to in sub -paragraph (2) shall be fitted with doors complying with the
requirements of paragraph 5 and shall have the fo llowing minimum sill heights --
600 millimetres in Position 1
380 millimetres in Position 2
(5) Where access i s provided from the deck above as an alternative to access from the
freeboard deck in accordance with sub-paragraph (9) of paragraph 2 of Part I, then
the height of sills into a bridge or poop shall be 380 mm. The same shall apply to
deckhouses on the free board deck.
(6) Where access is not provided from above, the height of the sills to doorways in
deckhouses on the freeboard deck shall be 600 mm.
(7) Where the closing appliances of access openings in superstructures and deckhouses
are not in accordance with sub-paragraph (1) of paragraph 5 of this Schedule , interior
deck openings shall be considered exposed (i.e. situated in the open deck).
12. Ventilators . — (1) Ventilators in position 1 or 2 to space below the freeboard deck or decks
of enclosed superstructure shal l have coaming of steel or other equivalent material,
substantially constructed and efficiently connected to the deck.
(2) The height of the ventila tor coamings shall be, at least
900 millimetres above the deck if t he ventilator is in Position 1;
760 millime tres above the deck if the ven tilator is in Position 2;
Provided that where a ventilator is situated in a position in which it will be particularly
subjected to weather and sea the height of the coaming shall be increased sufficiently
over the above minimu m height so as to provide adequate protection, having regard
to its position.
Where the coaming of any ventilator of any ventilator exceeds 900 millimetres in
height it shall be efficiently supported by brackets, stays or other means.
(3) Ventilators in Positi on 1 or 2 passing through super -structures other than enclosed
superstructures shall have coaming of steel or other equivalent material, substantially
constructed and connected to the freeboard deck.
(4) Subject to the sub -paragraph (5), every ventilator openi ng in Position 1 or 2 shall be
provided with an efficient appliance by which it can be closed and secured
weathertight. Every such closing appliance so provided on board a vessel of not
more than 100 metres in length shall be permanently attached to and i n the case of
any other vessel shall either be so attached or be conveniently stowed near the
ventilator to which it is fitted.
(5) A ventilator in Position 1 the coaming of which exceeds 4.5 metres in height above
the deck, and a ventilator in Position 2 the coaming of which exceeds 2.3 metres in
height above the deck, need not be fitted wi th a closing appliance unless --
(a) it serves the machinery s paces or a Cargo compartment or
(b) the fitting of such an appliance is necessary in the circumstances in order to provi de
adequate protection.
A ventilator in Position 1 or 2 leading to space in a battery room shall not be fitted with
a closing appliance.
13. Air pipes. — (1) Where air pipes to ballast and other tanks extend above the freeboard or
superstructure decks, the ex posed parts of the pipes shall be of substantial construction and
the exposed opening of any such air pipe shall be fitted with automatic closing devices which
shall b e permanently attached thereto.
(2) The height above the deck of the air pipe opening throug h which water may gain
access below shall be —
(a) at least 760 millimetres if that deck is freeboard deck.
(b) at least 450 millimetres if that deck is above the superstructure of standard height or
such greater height not exceeding 760 millimetres as it is consid ered necessary for
adequate protection having regard to the lower height of su perstructure than the
standard.
(3) Provided that the height described in the preceding sub -paragraph (2) may in any
particular case be lower than the minimum specified therein, if s uch height may
unreasonably interfere with the working of the vessel and if the closing arrangements
are such as to ensure adequate protection from the sea even with the lower height.
(4) Pressure -vacuum valves (PV valves) may be accepted on tankers.
14. Cargo po rts and other similar openings . — (1) The number of cargo ports and other similar
openings in the sides of the vessel below the freeboard deck or in the sides or ends of
superstructure which form continuous part of the shell of the vessel shall be as few a s
compatible with the design and proper working of the vessel . Unless otherwise granted by the
Director -General , these opening shall open outwards.
(2) The cargo ports referred t 39o in sub paragraph (1) and openings shall be provided
with doors so fitted and designed as to ensure watertightness and structural integrity
commensurate with surrounding shell plating.
(3) Unless so permitted by the Director -General in the circumstances, the lower edge of
such openings shall not be below a line drawn parallel to the fre eboard deck at side,
which has at its lowest point at least 230 mm above the upper e dge of the uppermost
load line.
(4) Where it is permitted to arrange cargo ports and other similar openings with their
lower edge below the line specified in sub -paragraph (3) additional features shall be
fitted to maintain the watertight integrity.
(5) The fitting of a second door of equivalent strength and watertightness is one
accep table arrangement. A leakage detection device shall be provided in the
compartment between the two doors. Drainage of this compartment to the bilges,
controlled by a readily accessible screw down valve, shall be arranged. The outer
door shall open outwards.
(6) Arrangements for bow doors and their inner doors, side doors and stern doors and
their securing shall be in compliance with the applicable national standards which
provide an equivalent level of safety.
15. Scuppers, inlets and discharges . — (1) All discharges led overboard through th e shell or a
vessel from either --
(a) spaces below the freeboard deck, or
(b) spaces within enclosed superstructure, or
(c) spaces within any deckhouses on the freeboard deck fitted with weathertight doors in
accordance with paragraph 5, shall be fitted with efficient and accessible means for
preventing water from passing inboard in accordanc e with the following sub -
paragraph s.
(d) Subject to clause (b) and (c) , such means of closing shall consist of a single automatic
non-returns valve fitted at the shell and having positive means of closing from a
position above the freeboard deck. Such position shall be readily accessible and shall
be provided with an indicator showing wheth er the valve is open or closed.
(e) If the vertical distance from the summer load water line to the inboard end of the
discharge pipe exceeds 0.01L, the discharge may have two automatic non -return
valves without positive means of closing, where however, that vertical distance
exceeds 0.02L, a single automatic non -return valve without positive means of closing
may be provided if it will be equally effective in the circumstances. The single valve or
the outboard valve where there are two shall be situated as close to the hull as
practicable and s ubstantially connected thereto.
(f) Scuppers and discharge pipes originating at any level and penetrating the shell either
more than 450 millimetres below the free board deck or less than 600 millimetres
above the summer load waterline shall be provided with a non -return valve at the
shell. This valve, unless required by clause (a) may be dispens ed with, if the piping is
of substantial construction.
(g) One automatic non -return valve and one sluice valve controlled from above the
freeboard deck instead of one automatic non -return valve with a positive means of
closing from a position above the freeboa rd deck, is accep table .
(h) Where two automatic non -return valves are required, the inboard valve shall always
be accessible for examination under service conditions (i.e., the inboard valve shall be
above the level of the Tropical Load Line). If this is not p racticable, the inboard valve
need not be located above the Tropical Load Line, provided that a locally controlled
sluice valve is fitted between the two automatic non -return valves.
(i) Where sanitary discharges and scuppers lead overboard through the shell i n way of
machinery spaces, a locally operated positive closing valve at the shell, together with
a non -return valve inboard, is accep table . The controls of the valves shall be in an
easily accessible position.
(j) The position of the inboard end of discharges shall be related to the Summer timber
load line when a timber freeboard is assigned.
(k) The requirements for non -return valves are applicable only to those discharges which
remain open during the normal operation of a vessel . For discharges which are to be
kept closed at sea, a single screw down valve operated from the deck is accep table .
(l) The controls of any valve situated in a manned machinery space, and serving a main
of auxiliary sea inlet or discharge or bilge injection system shall be so sited as to be
readily accessible at all times under service conditions. Valves referred to in this and
the following clause shall be equipped with an indicator showing wheth er the valve is
open or closed.
(m) The controls of any valve situated in an unattended machinery spa ce and serving a
sea inlet or discharge of bilge injection system shall be so sited as to be readily
accessible at all times under service conditions, particular attention being paid in this
regard to possible delay in reaching or operating the controls. In addition, the
machinery space in which the valve is situated shall be equipped with an efficient
warning device to give warning at suitable control position of any entry of water into
the machinery space other than water resulting from the nor mal operat ion of the
machinery.
(n) In this sub -paragraph “unattended machinery space" means a machinery space which
during normal operation of the vessel at sea is unmanned for any period, and "manned
machinery space" means a machinery space other than an unattended ma chinery
space.
(2) Every scupper leading from a superstructure other than an enclose superstructure or
from a deckhouse not fitted with weathertight doors shall be led over board.
(3) All valve and shell fittings required by the provisions of this rule shall be of steel,
bronze or other suitable ductile material, and all pipes referred to in this rule shall be
steel or other equivalent material.
(4) Scuppers led through the shell from enclosed superstructures used for the carriage
of cargo shall be permitted only where the edge of the freeboard deck is not
immersed when the vessel heels 5° either way. In other cases the drainage shall be
led inboard in accordance with the requirements of the International Convention for
the Safety of Life at Sea in force.
(5) Following Table provides the accep table arrangements of scuppers, inlets and
discharges.
(6) Scupper and discharge pipes:
(a) For scupper and discharge pipes, where substantial thickness is not required:
(i) for pipes having an external diameter equal to or less than 155 mm the
thickness shall not be less than 4.5 mm;
(ii) for pipes having an external diameter equal to or more than 230 mm, the
thickness shall not be less than 6 mm.
(iii) Intermediate sizes shall be determined by linear interpolation.
(b) For scupper and discharge pipes, where su bstantial thickness is required:
(i) for pipes having an external diameter equal to or less than 80 mm, the
thickness shall not be less than 7 mm;
(ii) for pipes having an external diameter of 180 mm, the thickness shall not be
less than 10 mm;
(iii) for pipes having an external diameter equal to or more than 220 mm, the
thickness shall not be less than 12.5 mm.
(iv) Intermediate sizes shall be determined by linear interpolation.
16. Side scuttles, windows and skylights . — (1) Side scuttles and windows, together with their
glasses , deadlights and storm covers, if fitted, shall be of an approved design and substantial
construction. Non -metallic frames are not acceptable .
(2) Side scuttles are defined as being round or oval openings with an area not exceeding
0.16 ㎡. Round or oval openings having areas exceeding 0.16 ㎡shall be treated as
windows.
(3) Windows are defined as being rectangular openings generally, having a radius at
each corner relative to the window size and round or oval openings with an area
exceeding 0. 16㎡.
(4) Side scuttles to the following spaces shall be fitted with hinged inside deadlights:
(a) spaces below freeboard deck;
(b) spaces within the first tier of enclosed superstructures; and
(c) first tier deckhouses on the freeboard deck protecting openings leading bel ow or
considered buoyant in stability calculations.
and the Deadlights shall be capable of being closed and secured watertight if fitted
below the freeboard deck and weathertight if fitted above.
(5) Side scuttles shall not be fitted in such a position that th eir sills are below a line drawn
parallel to the freeboard deck at side and having its lowest point 2.5% of the breadth
(B), or 500 mm, whichever is the greater distance, above the Summer Load Line (or Timber
Summer Load Line if assigned).
(6) If the required damage stability calculations indicate that the side scuttles would
become immersed at any intermediate stage of flooding or the final equilibrium
waterline, they shall be of the non -opening type.
(7) Windows shall not be fitted in the following locations:
(a) below the freeboard deck;
(b) in the first tier end bulkheads or sides of enclosed superstructures; or
(c) in first tier deckhouses that are considered buoyant in the stability calculations.
(8) Side scuttles and windows at the side shell in the second tier shall be prov ided with
hinged inside deadlights capable of being closed and secured weathertight if the
superstructure protects direct access to an opening leading below or is considered
buoyant in the stability calculations.
(9) Side scuttles and windows in side bulkheads set inboard from the side shell in the
second tier which protect direct access below to spaces listed in sub -paragraph (4)
shall be provided with either hinged inside deadlights or, where they are accessible,
permanently attached external storm covers whi ch are capable of being closed and
secured weathertight.
(10) Cabin bulkheads and doors in the second tier and above separating side scuttles
and windows from a direct access leading below or the second tier considered
buoyant in the stability calculations may be accepted in place of deadlights or storm
covers fitted to the side scuttles and windows.
(11) Deckhouses situated on a raised quarter deck or on the deck of a superstructure
of less than standard height may be regarded as being in the second tier as far as
the requirements for deadlights are concerned, provided that the height of the raised
quarter deck or superstructure is equal to or greater than the standard quarter deck
height.
(12) Fixed or opening skylights shall have a glass thickness appropriate to their s ize
and position as required for side scuttles and windows. Skylight glasses in any
position shall be protected from mechanical damage and, where fitted in position 1
or 2, shall be provided with permanently attached deadlights or storm covers.
17. Freeing por ts. — (1) General:
(a) Where bulwarks on weather portions of freeboard deck or superstructure decks form
wells, ample provision shall be made for rapidly freeing the d eck of water and draining
them.
(b) Except as provided in clause (c) of sub-paragraph s (1) and (2 ), the minimum freeing
port area (A) on each side of the vessel for each well on the freeboard deck shall be
that given by the following formulae in cases where the sheer in way of the well is
standard or greater than standard.
The minimum area for each we ll on superstructure decks shall be one -half of the
area given by the following formulae:
where the length of bulwark (L) in the well is 20 metres or less --
A=0.7 + 0.035L (sq.metres)
where L is greater than 20 metres;
A=0.07L (sq. metres).
the length of bulwark (L) in no case need be taken greater than 0.7L.
If the bulwark is more than 1.2 m in average height, the required area shall be
increased by 0.004sq.m per metre of length of well for each 0.1 m difference in
height. If the bulwark is less than 0.9 m in average height, the required area may
be decreased by 0.004 sq.m per m of length of well for each 0.1 m difference in
height.
(c) In vessel s with no sheer, the area calculated according to clause (b) shall be increased
by 50%. Where the sheer is less than the standard, the per cent. ..age shall be obtained
by linear interpolation.
(d) On a flush deck vessel with a deckhouse amidships having a breadth at least 80% of
the beam of the vessel and the passageways along the side of the vessel not
exceeding 1.5 m in wi dth, two wells are formed. Each shall be given the required
freeing port area based upon the length of each well.
(e) Where a screen bulkhead is fitted completely across the vessel at the forward end of
a midship deckhouse, the exposed deck is divided into two wells and there is no
limitation on the breadth of the deckhouse.
(f) Wells on raised quarterdecks shall be treated as being on freeboard decks.
(g) Gutter bars greater than 300 mm in height fitted around the weather decks of tankers
in way of cargo manifolds and cargo piping shall be treated as bulwarks. Freeing ports
shall be arranged in accordance with this paragraph . Closures attached to the freeing
ports for use during loading and discharge operations are to be arranged in such a
way that jamming cannot occur while at sea.
(2) Where a vessel fitted with a trunk does not comply with the requirements of clause
(e) of sub -paragraph (1) of paragraph 9 of the Second Schedule or where continuous
or substantially continuous hatchway side coamings are fitted between detac hed
superstructures, the minimum area of the freeing port openings shall be calculated
from the following Table :
Breadth of hatchway or trunk in relation to the
breadth of vessel Area of freeing ports in relation to the total
area of the bulwarks
40% or l ess 20%
75% or more 10%
The area of freeing ports at intermediate breadths shall be obtained by linear
interpolation.
(3) The effectiveness of the freeing area in bulwarks required by sub-paragraph (1)
depends on the free flow area across the deck of a vesse l.
The free flow area on deck is the net area of gaps between hatchways, and between
hatchways and superstructures and deckhouses up to the actual height of the
bulwark.
The freeing port area in bulwarks shall be assessed in relation to the net free flow
area as follows:
(a) If the free flow area is not less than the freeing area calculated from sub-paragraph (2)
as if the hatchway coamings were continuous, then the minimum freeing port area
calculated from sub-paragraph (1) shall be deemed sufficient.
(b) If the f ree flow area is equal to, or less than the area calculated from sub-paragraph
(1), the minimum freeing area in the bulwarks shall be determined from sub-paragraph
(2).
(c) If the free flow area is smaller than calculated from sub-paragraph (2), but greater th an
calculated from sub-paragraph (1), the minimum freeing area in the bulwark shall be
determined from the following formula:
F = F1 + F2 - fp sq.m
where:
F1 is the minimum freeing area calculated from sub - paragraph (1);
F2 is the minimum freeing area cal culated from sub - paragraph (2); and
fp is the total net area of passages and gaps between hatch ends and
superstructures or deckhouses up to the actual height of bulwark.
(4) In vessel s having superstructures on the freeboard deck or superstructure decks,
which are open at either or both ends to wells formed by bulwarks on the open decks,
adequate provision for freeing the open spaces within the superstructures shall be
provided to the satisfaction of the Assigning Authority.
The minimum freeing port area on each side of the vessel for the open superstructure
(As) and for the open well (A w), shall be calculated in accordance with the following
procedure:
(a) Determine the total well length (l t) equal to the sum of the length of the open deck
enclosed by bulwarks ( lw) and the length of the common space within the open
superstructure (l s).
(b) To determine A s:
(i) calculate the freeing port area (A) required for an open well of length l t in
accordance with sub-paragraph (1) with standard height bulwark assumed;
(ii) multiply by a factor of 1.5 to correct for the absence of sheer, if applicable,
in accordance with clause(c) of sub-paragraph (1);
(iii) multiply by the factor (b o/lt) to adjust the freeing port area for the breadth (b o)
of the openings in the end bulkhead of the enclosed su perstructure;
(iv) to adjust the freeing port area for that part of the entire length of the well
which is enclosed by the open superstructure, multiply by the factor:
1 - (lw/lt)2
where l w and l t are defined in clause (4)(a);
(v) to adjust the freeing port area fo r the distance of the well deck above the
freeboard deck, for decks located more than 0.5 h s above the freeboard
deck, multiply by the factor :
0.5 (h s/hw)
where h w is the distance of the well deck above the freeboard deck and h s is
one standard superstruc ture height.
(c) To determine A w:
(i) The freeing port area for the open well (A w) shall be calculated in
accordance with sub -clause (b)(i), using l w to calculate a nominal freeing
port area (A’), and then adjusted for the actual height of the bulwark (h b) by
the application of one of the following area corrections, whichever is
applicable:
for bulwarks greater than 1.2 m in height:
Ac = lw((hb - 1.2)/0.10)(0.004) m2;
for bulwarks less than 0.9 m in height:
Ac = lw((hb - 0.9)/0.10)(0.004) m2;
for bulwarks between 1.2 m and 0.9 m in height there is no correction (i.e. A c
= 0);
(ii) the corrected freeing port area (A w = A’ + A c) shall then be adjusted for
absence of sheer, if applicable, and height above freeboard deck as in sub -
clauses (b)(ii) and (b)(v), using h s and h w.
(d) The resulting freeing port areas for the open superstructure (A s) and for the open well
(Aw) shall be provided along each side of the open space covered by the open
superstructure and each side of the open well, respectively.
(e) The above relationships are summarised by the following equations , assuming lt, the
sum of l w and l s, is greater than 20 m:
freeing port area A w for the open well:
Aw = (0.07l w + A c) (sheer correction) (0.5h s/hw);
freeing port area A s for the open superstructure:
As = (0.07l t) (sheer correction) (b o/lt) (1 - (lw/lt)2) (0.5h s/hw);
where l t is 20 m or less, the basic freeing port area is A = 0.7 + 0.035l t in accordance
with sub -paragraph (1).
(5) The lower edges of freeing ports shall be as near the deck as practicable. Two thirds
of the fr eeing port area required shall be provided in the half of the well nearest the
lowest point of the sheer curve. One third of the freeing port area required shall be
evenly spread along the remaining length of the well. With zero or little sheer on the
expo sed freeboard deck or an exposed superstructure deck the freeing port area
shall be evenly spread along the length of the well.
(6) All freeing port openings in the bulwarks shall be protected by rails or bars spaced
approximately 230 mm apart. If shutters are fitted to freeing ports, ample clearance
shall be provided to prevent jamming. Hinges shall have pins or bearings of non -
corrodible material. Shutters shall not be fitted with securing appliances.
18. Spurling pipes and cable lockers . — (1) Spurling pipes a nd cable lockers shall be
watertight up to the deck exposed to weather.
(2) Where means of access are provided, they shall be closed by a substantial cover
and secured by closely spaced bolts.
(3) Spurling pipes through which anchor cables are led shall be provi ded with
permanently attached closing appliances to minimi se water ingress.
19. Garbage chutes . — (1) Two gate valves controlled from the working deck of the chute
instead of the non -return valve with a positive means of closing from a position above the
freeboard deck which comply with the following requirements are acceptable :
(a) the lower gate valve shall be controlled from a position above the freeboard deck. An
interlock system between the two valves shall be arranged;
(b) the inboard end shall be located abov e the waterline formed by an 8.5° heel to port or
starboard at a draft corresponding to the assigned summer freeboard, but not less than
1,000 mm above the summer waterline.
Where the inboard end exceeds 0.01L above the summer waterline, valve control
from the freeboard deck is not required, provided the inboard gate valve is always
accessible under service conditions; and
(c) alternatively, the upper and lower gate valves may be replaced by a hinged
weathertight cover at the inboard end of the chute together with a discharge flap. The
cover and flap shall be arranged with an interlock so that the discharge flap cannot be
operated until the hopper cover is closed.
(2) The entire chute, including the cover, shall be constructed of material of substantial
thickness.
(3) The controls for the gate valves and/or hinged covers shall be clearly marked: "Keep
closed when not in use".
(4) Where the inboard end of the chute is below the freeboard deck of a passenger
vessel or the equilibrium waterlines of a cargo vessel to which dam age stability
requirements apply, then:
(a) the inboard end hinged cover/valve shall be watertight;
(b) the valve shall be a screw -down non -return valve fitted in an easily accessible position
above the deepest load line; and
(c) the screw -down non -return valve shall be controlled from a position above the
bulkhead deck and provided with open/closed indicators. The valve control shall be
clearly marked: "Keep closed when not in use".
20. Protection of the crew. — (1) The strength of the deckhouses used for the accommodat ion
of the crew shall be to the satisfaction of the Director -General or any other Assignin g Authority
as the case may be.
(2) Efficient guard rails or bulwark s shall be fitted on the boundaries of all exposed parts
of the freeboard decks. The height of the bulwark s or guard rails shall be at least 1
metre from the deck.
Provided that if this height would interfered with the normal operation of the vessel
at some particular span, a lesser height over that span may be approved by the
Assigning authority on bei ng fully satisfied that alternative or adequate protection
is provided. In specified areas of the exposed decks, the assigning authority may
also permit the use of gua rd wire in lieu of guard rails.
(3) Guard rails fitted on superstructure and freeboard decks shall have at least three
courses. The opening below the lowest course of the guard rails or wires shall not
exceed 230 millimetres. The other courses shall not be more than 380 millimetres
apart. In the case of vessel s with rounded gunwales, the stanchi ons shall be secured
to the flat boundary of the deck. In other locations, guardrails with at least two
courses shall be fitted. Guard rails shall comply with the following provisions:
(a) fixed, removable or hinged stanchions shall be fitted about 1.5 m apart . Removable or
hinged stanchions shall be capable of being locked in the upright position;
(b) at least every third stanchion shall be supported by a bracket or stay;
(c) where necessary for the normal operation of the vessel , steel wire ropes may be
accepted in l ieu of guard rails. Wires shall be made taut by means of turnbuckles; and
(d) where necessary for the normal operation of the vessel , chains fitted between two fixed
stanchions and/or bulwarks are accep table in lieu of guard rails.
(4) Satisfactory and safe means in the form of guard rails, guard wires, lifelines
gangways or under -deck passages, etc., shall be provided for the protection of the
crew in getting to and from their quarters, the machinery space and all other parts
used in the necessary wor k of the vessel.
(5) Deck cargo carried on any vessel shall be so stowed that any opening which is in
way of the cargo and which gives access to and from the crew’s quarters, the
machinery space and all other parts used in the essential operation of the vessel can
be close d and secured against water ingress. Protection for the crew in the form of
guard rails or lifelines shall be provided above the deck cargo if there is no convenient
passage on or below the deck of the vessel .
(6) Means for safe passage of crew : The safe passa ge of crew shall be provided by at
least one of the means specified in Table 5 below:
Table 5
Type of
vessel Locations of access in
vessel Assigned
summer
freeboard Accep table arrangements according to type of
freeboard assigned.
Type –‘A’ Type
‘B-100’ Type
‘B-60’ Type ‘B’
and ‘B+’
All vessel s
other than
Oil
tankers*,
Chemical
Tankers*
and Gas
Carriers* 1.1 Access to midship
quarters
1.1.1 Between poop
and bridge, or
1.1.2 Between poop
and Deckhouse
containing living
accommodation
or navigating
equipment or
both. <3000 mm (a)
(b)
(e) (a)
(b)
(e) (a)
(b)
(c)(i)
(e)
(f)(i) (a)
(b)
(c)(i)
(c)(ii)
(c)(iv)
(d)(i)
(d)(ii)
(d)(iii)
(e)
(f)(i)
(f)(ii)
(f)(iv) >3000 mm (a)
(b)
(e) (a)
(b)
(e) (a)
(b)
(c)(i)
(c)(ii)
(e)
(f)(i)
(f)(ii)
1.2 Access to ends
1.2.1 Between poop
and bow (if there
is no bridge),
1.2.2 Between bridge
and bow, or
1.2.3 Between a
deckhouse
containing living
accommodation
or navigating
equipment, or
both, and bow or
1.2.4 In the case of a
flush deck
vessel between
crew
accommodation
and the forward
and after ends of
vessel . <3000 mm (a)
(b)
(c)(i)
(e)
(f)(i) (a)
(b)
(c)(i)
(c)(ii)
(e)
(f)(i)
(f)(ii) (a)
(b)
(c)(i)
(c)(ii)
(e)
(f)(i)
(f)(ii)
>3000 mm (a)
(b)
(c)(i)
(d)(i)
(e)
(f)(i)
(a)
(b)
(c)(i)
(c)(ii)
(d)(i)
(d)(ii)
(e)
(f)(i)
(f)(ii) (a)
(b)
(c)(i)
(c)(ii)
(c)(iv)
(d)(i)
(d)(ii)
(d)(iii)
(e)
(f)(i)
(f)(ii)
(f)(iv)
Accep table arrangements according to type of
freeboard assigned.
Type of
vessel Locations of access in
vessel Assigned
summer
freeboard Type ‘A’
Oil
tankers*,
Chemical
Tankers*
and Gas
Carriers* 2.1 Acce ss to bow
2.1.1 Between poop and
bow, or
2.1.2 Between a
deckhouse containing
living accommodation or
navigating equipment, or
both, and bow, or
2.1.3 In the case of a
flush deck vessel
between crew
accommodation and the
forward and after ends of
vessel . < (Af + Hs)**
(a)
(e)
(f)(i)
(f)(v)
> (Af + Hs)**
(a)
(e)
(f)(i)
(f)(ii)
2.2 Access to after end
2.2.1 In the case of a
flush deck vessel
between crew
accommodation and the
forward and after ends of
vessel . As required in 1.2.4 for other types of vessels
* Oil tankers, chemical tankers and gas carriers as defined in paragraphs II-1/2.12, VII/8.2 and
VII/11.2, respectively, of the International Convention for the Safety of Life at Sea, 1974, as
amended.
** Af: the minimum summer freeboard calculated as Type ‘A’ vessel regardless of the type
freeboard actually assigned.
Hs: the standard height of superstructure as defined in paragraph 8 of the Second Schedule .
*** Arrangements (a) -(f) are described in sub -paragraph (1) below. Locations (i) -(v) are described
in sub -paragraph (2) below.
(1) Accep table arrangements referred to in this Table are defined as follows:
(a) A well-lighted and ventilated under -deck passageway (with a clear opening of at least
0.8 m eters wide a nd 2 m eters high), as close as practicable to the freeboard deck,
connecting and providing access to the locations in question.
(b) A permanent and efficiently constructed gangway, fitted at or above the level of the
superstructure deck, on or as near as pract icable to the centre line of the vessel ,
providing a continuous platform at least 0.6 m in width and a non -slip surface and with
guard rails extending on each side throughout its length. Guard rails shall be at least
1 m high with three courses and constru cted as required in sub -paragraph (3) of
paragraph 20 . A foot -stop shall be provided.
(c) A permanent walkway at least 0.6 m in width, fitted at freeboard deck level and
consisting of two rows of guard rails with stanchions spaced not more than 3 m. The
number of courses of rails and their spacing shall be in accordance with sub-paragraph
(3) of paragraph 20 . On Type ‘B’ vessel s, hatchway coamings not less than 0.6 m in
height may be accepted as forming one side of the walkway, provided that two rows
of guard r ails are fitted between the hatchways.
(d) A wire rope lifeline not less than 10 mm in diameter, supported by stanchions not more
than 10 m apart, or a single handrail or wire rope attached to hatch coamings,
continued and supported between hatchways.
(e) A perman ent gangway that is:
(i) located at or above the level of the superstructure deck;
(ii) located on or as near as practicable to the centre line of the vessel ;
(iii) located so as not to hinder easy access across the working areas of the
deck;
(iv) providing a continuous platf orm at least 1 m in width;
(v) constructed of fire resistant and non -slip material;
(vi) fitted with guard rails extending on each side throughout its length; guard
rails shall be at least 1 m high with courses as required by sub-paragraph
(3) of paragraph 20 and s upported by stanchions spaced not more than 1.5
m apart;
(vii) provided with a foot -stop on each side;
(viii) having openings, with ladders where appropriate, to and from the deck.
Openings shall not be more than 40 m apart; and
(ix) having shelters set in way of the gangw ay at intervals not exceeding 45 m
if the length of the exposed deck to be traversed exceeds 70 m. Every such
shelter shall be capable of accommodating at least one person and be so
constructed as to afford weather protection on the forward, port and
starb oard sides.
(f) A permanent walkway located at the freeboard deck level, on or as near as practicable
to the centre line of the vessel , having the same specifications as those for a
permanent gangway listed in clause (e), except for foot -stops. On Type ‘B’ vessels
(certified for the carriage of liquids in bulk) with a combined height of hatch coaming
and fitted hatch cover of not less than 1 m in height, the hatchway coamings may be
accepted as forming one side of the walkway, provided that two rows of guard ra ils are
fitted between the hatchways.
(2) Permitted transverse locations for arrangements in clauses (c), (d) and (f) of sub
paragraph (1) above, where appropriate:
(i) at or near the centre line of the vessel ; or fitted on hatchways at or near the
centre line o f the vessel ;
(ii) fitted on each side of the vessel ;
(iii) fitted on one side of the vessel , provision being made for fitting on either
side;
(iv) fitted on one side of the vessel only;
(v) fitted on each side of the hatchways, as near to the centre line as
practicable.
(g)
(i) Where wire ropes are fitted, turnbuckles shall be provided to ensure their
tautness.
(ii) Where necessary for the normal operation of the vessel , steel wire ropes
may be accepted in lieu of guard rails.
(iii) Where necessary for the normal operation of the vessel , chain s fitted
between two fixed stanchions are accep table in lieu of guard rails.
(iv) Where stanchions are fitted, every third stanchion shall be supported by a
bracket or stay.
(v) Removable or hinged stanchions shall be capable of being locked in the
upright position .
(vi) A means of passage over obstructions such as pipes or other fittings of a
permanent nature shall be provided.
(vii) Generally, the width of the gangway or deck -level walkway shall not exceed
1.5 m.
(h) For tankers less than 100 m in length, the minimum width of t he gangway platform or
deck -level walkway fitted in accordance with clauses (e) or (f) of sub -paragraph (1)
above, respectively, may be reduced to 0.6 m.
PART III
SPECIAL CONDITIONS OF ASSIGNMENTS FOR TYPE ‘A’ VESSEL S
21. Machinery casings . — (1) The Machinery Casin g on Type ‘A’ vessel s shall be protected
by—
(a) an enclosed poop or bridge of at least standard height or
(b) a deckhouse of equal height and equivalent strength and weathertightness
Provided that this requirement shall not apply and the casin g may accordingly be
exposed ---
(a) if there is no opening in the casing which gives direct access from the free -
board deck to the machinery space; or
(b) if the only opening in the casing has a steel weathertight door complying with
paragraph 5 and leads to a space or passageway which is as strongly, constructed as
the casing and is separated from the stairway to the machinery space by a second
similar steel weathertight door.
22. Gangway and access . — (1) References in this paragraph to a poop or detached bridge on
Type ‘A’ vessel s include reference to a deckhouse fitted in lieu of and serving the purpos e of
a poop or detached bridge.
(2) Access between the poop and the detached bridge shall be by means of either ---
(a) Gangway complying with t he requirements of sub -paragraph (4), or
(b) an underdeck passage complying with the requirements of sub -paragraph (5), or
(c) other equally effective and equivalent approved means of access as per Table 5 of
paragraph 20.
(3) In the case of a vessel the crew of which may in the course of their duties be required
to go in adverse weather conditions to a position or positions forward of the detached
bridge, or forward of the poop in cases where there is no detached bridge and all
crew accommodation and machinery spaces are situated at the after end of the
vessel , access to such position s shall be by means of either --
(a) a gangway complying with the requirements of sub-paragraph (4), or
(b) an underdeck passage complying with the requ irements of sub-paragraph (5), or
(c) a walkway complying with the requirements of sub-paragraph (6).
(4) A gangway, connecting the specified super -structure or deckhouse in lieu and
required under this Part, shall comply wi th the following requirements --
(a) The gang way shall be permanently and efficiently constructed at the level of the
superstructure deck. Efficient means of access from gangway level to the deck shal l
be provided at each terminal.
(b) the gangway platform shall be at least 1 metre in width and of non -slip material. The
platform shall be fitted at each side throughout its length with guard rails or guard wires
supported by stanchions. Such rails or wires shall consist of not less than 3 courses,
the lowest being not more than 230 mm above the platform and intermediate ones
being not more than 380 mm apart, but the uppermost one being not less than 1 metre
above the platform. The stanchions supporting the rails or guard wires shall be at
interva ls of not more than 1.5 metres.
(5) An underdeck passageway con necting and providing unobstructed access between
specified superstructures or deckhouses in lieu, and required under this Part, shall
comply with the following requirements .
(a) the passage shall be constructed oil tight and gastight immediately below the
freeboard deck and shall be well -lighted and adequately ventil ated by mechanical
ventilation. The passage shall be fitted with efficient gas detection system.
(b) the passage shall be situated throughout its length at distance from the vessel side of
not less tha n one -fifth of the breadth (B) of the vessel , Provided that in the case of a
vessel so designed as to render compliance with this requirement is not practicable,
two under -deck passages may be provided one to port and one to starboard, each of
which shall comply with all requirements except the requirement of this clause .
(c) the means of exit from the passage to the freeboard deck shall be so arranged as to
be as near as practicable to the working areas of the crew but in no case be more than
90 metres apart a nd fitted with efficient means of closing capable of quick release and
operable from either sides. The companionway or deckhouse on the freeboard deck
protecting the exit shall be fitted with steel door complying with paragraph 5 of this
Schedule .
(6) A walkway providing unobstructed passage if necessary by means of elevated
passage over permanent obstruction, and required under this Part, shall comply wi th
the following requirements --
(a) the walkway shall be situated as near as practicable to the centerline of the vessel and
shall be not less than 1 metre in width and fitted with guardrails or guard wires
complying identically with those in clause (b) of sub -paragraph (4) ;
(b) the walkway shall provide free access to and f rom freeboard deck, set in such guard
rails or guard wires as near as practicable to the working areas, so however, that such
openings shall be on the alternate sides of the walkway and be situated not more than
90 metres apart on either side;
(c) if the lengt h of the exposed deck to be traversed exceeds 70 metres, the walkway shall
be provided with shelters of substantial construction set out from the walkway at
intervals not exceeding 45 metres, every such shelter being capable of
accommodating at least one p erson and so constructed as to afford weather protection
on the for ward, port and starboard sides.
23. Hatchway covers . — The covers of hatchway in an exposed position on the freeboard deck,
on a forecastle deck or on the top of an expansion trunk (of Type ‘ A’ vessel s) shall be of steel,
or other equivalent material of efficient constructio n, and watertight when secured.
24. Freeing arrangements . — (1) All exposed parts of the freeboard deck and superstructure
decks of Type 'A' vessel s shall be fitted at vesse l sides for at least half their length with guard
rails or guard wires in lieu of bulwark s or other equally effective freeing arrangements. A
freeing port area, in the lower part of the bulwarks, of 33% of the total area of the bulwarks, is
an acceptable equivalent freeing arrangement. The upper edge of the sheer strake shall be
kept as low as practicable. Guard rails or guard wires shall comply with the requirements for
them in clause (b) of sub-paragraph (4) of paragraph 22 and the upper edge of the sheer
strake shall be as low as practicable.
(2) If the superstructures of the Type ‘A’ vessel s are connected by a trunk, the exposed
parts of the freeboard deck in way of the trunk shall be fitted at vessel sides with
guard rails or guard wires complying with the requirements for them in clause (b) of
sub-paragraph (4) of paragraph 22
(3) If the vessel is so constructed that notwithstanding the provisions of freeing ports and
arrangements it will be particularly subjected under service conditions to the building
up of quantities of water on the freeboard deck efficient breakwater shall be fitted in
suitable positions on that deck.
PART IV
SPECIAL CONDITIONS OF ASSIGNMENT FOR TYPE ‘B’ VESSELS WITH REDUCED
FREEBOARD
25. Gangway and access . — (1) Unless a Type ‘B’ vessel with reduced freeboard complies fully
with requirements of paragraph 22 as if the vessel were a Type ‘A’ vessel , such a vessel shall
comply with the requirements of the Table 5 of paragraph 20:-
(2) Freeing arrangements: The vessel shall comply with the requirements of paragraph
24.
PART V
SPECIAL CONDIT IONS OF ASSIGNMENT FOR VESSELS WITH TIMBER FREEBOARD
26. Superstructure . — (1) The vessel shall have a forecastle of not less than the standard
height of an enclosed superstructure and a length of not less than 0.07 L.
(2) If the vessel is less than 100 metres i n length it shall be fitted with a poop of not less
than standard height or a raised quarter deck having either a deckhouse or a strong
steel hood, so that the total height thereof is not less than the standard height of an
enclosed superstructure.
27. Double bottom tanks . —Double bottom tanks where fitted within the midship half-length of
the vessel shall have satisfactory watert ight longitudinal sub -division.
28. Bulwark and tanks . — (1) The vessel shall be fitted with either permanent bulwark at least 1
metre i n height, especially stiffened on the upper edge and supported by strong bulwark stays
attached to the deck and provided with freeing ports complying with the requirements of
paragraph 17.
(2) Efficient guard rails and stanchions at least 1 metre in height, of especially strong
construction and complying with the requirements of sub -paragraph (2) of paragraph
20.
29. Stowage . — (1) Openings in the deck exposed to weather over which cargo is stowed shall
be securely cl osed and battened down. The ventilators and air pipes shall be efficiently
protected.
(2) Timber deck cargoes shall extend over at least the entire available length which is
the total length of the well or wells between superstructures. Where there is no
limiting superstructure at the after end, the timber shall extend at least to the after
end of the aftermost hatchway.
The timber deck cargo shall extend athwartships as close as possible to the vessel ’s
side, due allowance being made for obstructions such as guard rails, bulwark stays,
uprights, pilot access, etc., provided that any gap thus created at the side of the vessel
shall not exceed a mean of 4% of the breadth. The timber shall be stowed as solidly
as possible to at least the standard height of the su perstructure other than any raised
quarterdeck.
(3) On a vessel within a seasonal winter zone in winter, the height of the deck cargo
above the deck exposed to weather shall not exceed one third of the extreme breadth
of the vessel .
(4) The timber deck cargo shall be compactly stowed, lashed and secured. It shall not
interfere in any way with the navigation and necessary work of the vessel .
(5) Uprights, when required by the nature of the timber, shall be of adequate strength
considering the breadth of the vessel ; the strength of the uprights shall not exceed
the strength of the bulwark and the spacing shall be suitable for the length and
character of timber carried, but shall not exceed 3 m. Strong angles or metal sockets
or equally efficient means shall be provided f or securing the uprights.
(6) Timber deck cargo shall be effectively secured throughout its length by a lashing
system accep table to the Director -General for the character of the timber carried.
(7) Provision shall be made for a safe margin of stability at all sta ges of the voyage,
regard being given to additions of weight, such as those arising from absorption of
water or icing, if applicable, and to losses of weight such as those arising from
consumption of fuel and stores.
(8) Protection of crew, access to machinery spaces, etc.
(a) In addition to the requirements of sub-paragraph (5) of paragraph 20 , guard -rails or
lifelines not more than 350 mm apart vertically shall be provided on each side of the
cargo deck to a height of at least 1 m above the cargo.
In addition a l ifeline, preferably wire rope set up taut with a stretching screw, shall
be provided as near as practicable to the centreline of the vessel . The stanchion
supports to all guard -rails and lifelines shall be so spaced as to prevent undue
sagging. Where the c argo is uneven, a safe walking surface of not less than 600
mm in width shall be fitted over the cargo and effectively secured beneath or
adjacent to the lifeline.
(b) Where the requirements specified in clause (a) are impracticable, alternative
arrangements s atisfactory to the Director -General shall be used.
30. Steering Arrangement . —Steering arrangements shall be effectively protected from damage
by cargo and, as far as practicable, shall be accessible. Efficient provision shall be made for
steering in the event of a breakdown in the main steering arrangements.
SECOND SCHEDULE
(See rule 3 6 and 37 )
FREEBOARDS
PART I
GENERAL
1. Application . — (1) Except as otherwise provided in sub -paragraphs (2) and (3), the
freeboards to be assigned to a vessel other than timber freebo ards shall be determined
in accordance with the provisions of Part II of this Schedule , and Timber freeboards to
be assigned to a vessel shall be determined in accordance with Part III.
(2) Freeboards determined as described in this sub-paragraph are the fre eboards
appropriate to vessel s the structural strength of which complies with the highest
standard required by an Assigning Authority; and the freeboard to be assigned to
vessel s the structural strength of which does not comply with that standard shall be
freeboards so determined but increased in each case by such amount as the
Assigning Authority with the approval of the Director -General may determine as
appropriate to the vessel 's structural strength.
(3) Tabular freeboards appropriate to the vessel 's length are set out in Freeboard Table
A for Type ‘A’ vessel s and Freeboard Table B for Type ‘B’ vessel s in Part V of this
Schedule .
(4) The freeboards to be assigned to tugs and unmanned barges having as the freeboard
deck only small access closed watertight or vesse ls with unusual construction
features shall be determined in accordance with provisio ns of Part IV of this
Schedule .
PART II
FREEBOARDS OTHER THAN TIMBER FREEBOARDS
2. Computation of Freeboards . — (1) The summer freeboard shall be determined in
accordance with the provisions of paragraph s 3 and 4
Provided that the freeboard in salt water, so obtained but without any correction made
for the deck line as provided in paragraph 6 s hall not be less than 50 millmetres except
in case of a vessel having in position 1 hatchways which do not comply with the
requirements of sub-paragraph ( 4) of paragraph 8 , paragraph 9 or paragraph 23 of
the First Schedule , in which case the freeboard shal l not be less than 150 millimetres.
(2) The tropical freeboard shall be obtained by deducting from the Summer freeboard
applicable to the vessel one forty -eight (1/48th) of the summer draft of the vessel :
Provided further that the freeboard in salt water, so obtained but without any
correction made for the dec kline as provided in paragraph (3) shall not be less than
50 millimetres except in case of a vessel having in Position 1 hatchways with covers
which do not co mply with the requirements of sub-paragraph (4) of paragraph 8,
paragraph 9 or paragraph 23 of the First Schedule , in whic h case the freeboard shall
not be less than 150 millimetres.
(3) The Winter Freeboard shall be obtained by adding to the Summer freeboard
applicable to the vessel one forty -eighth (1/48th) o f the summer draft of the vessel .
(4) For vessel not more than 100 metres in length, the Winter North Atlantic freeboard
shall be obtained by adding 50 millimetres to the Winter freeboard applicable to the
vessel . For other vessel s, the Winter North Atlantic freeboard shall be the winter
freeboard.
(5) The Fresh Water freeboard: - (a) T he Fresh Water freeboard shall, subject to clause
(b), be obtained by deducting from the summer freeboard the quantity —
(∆/40T) centimetre
where ∆ is the displacement in salt water in metric tons at summer load waterline
and T represents metric tons per centimetre immersion i n salt water at that
waterline.
(b) In any case in which the displacement at that waterline cannot be ascertained
the deduction shall be one -forty-eighth (1/48th) o f the summer draft of the
vessel .
3. Summer Freeboard for Type ‘A’ vessel s. — (1) The summer freeboard for Type ‘A’ vessel
shall be determined as follows:
(a) There shall first be ascertained the Tabular Freeboard ap propriate to the vessel 's
length.
(b) For vessel s having black co -efficient (Cb) of not exceeding than 0.68, the basic
freeboard shall be tabular freeboard and for vessel s having black coefficient (Cb)
exceeding 0.68, the basic freeboard shall be obtained by multiplying the Tabular
freeboard by the factor:
(Cb+0.68)/1.36
(2) The basic freeboard shall then be duly corrected in a ccordance with the requirements
of paragraphs 5 to 12.
(3) Subject to the proviso to sub-paragraph (1) of paragraph 2, the basic freeboard so
corrected shall be the summe r freeboard to be assigned to the Type ‘A’ vessel .
(4) A Type ‘A’ vessel , if over 150 m in length, to which a freeboard less than type ’B’ has
been assigned, when loaded in accordance with the requirements of sub-paragraph
(7) of paragraph 4 , shall be able to withstand the flooding of any compartment or
compartments, with an assumed permeability of 0.95, consequent upon the damage
assumptions specified in sub-paragraph (8) of paragraph 4 , and shall remain afloat
in a satisfactory condition of equilibrium, as sp ecified in sub -paragraph (9) of
paragraph 4 . In such a vessel , the machinery space shall be treated as a floodable
compartment, but with a permeability of 0.85.
(5) A type ‘A’ vessel shall be assigned a freeboard not less than that based on Table A
of Part V.
4. Summer Freeboard for type ‘B’ vessel s. — The summer freeboard for type ‘B’ vessel shall
be determined as follows:
(1) There shall first be ascertained the Tabular freeboard appropriate to the vessel 's
length.
(2) Type ‘B’ vessel s, which in position 1 have hatch co vers which are permitted by the
Assigning Authority to comply with the requirements of paragraph 8 (other than
paragraph 4) or which are fitted with equivalent securing arrangements accepted
under the provisions of sub-paragraph (3) of paragraph 9 , shall be assigned
freeboards based upon the values given in Table B, increased by the amount shown
by the following Table to the appropriate vessel 's length
TABLE
Length of
vessel
(metres) Freeboard
increase
(millimetr es) Length of
vessel
(metres) Freeboard
increase
(millimetres) Length of
vessel
(metres) Freeboard
increase
(millimetres)
108 and below 50 139 175 170 290
109 52 140 181 171 292
110 55 141 186 172 294
111 57 142 191 173 297
112 59 143 196 174 299
113 62 144 201 175 301
114 64 145 206 176 304
115 68 146 210 177 306
116 70 147 215 178 308
Length of
vessel
(metres) Freeboard
increase
(millimetr es) Length of
vessel
(metres) Freeboard
increase
(millimetres) Length of
vessel
(metres) Freeboard
increase
(millimetres)
117 73 148 219 179 311
118 76 149 224 180 313
119 80 150 228 181 315
120 84 151 232 182 318
121 87 152 236 183 320
122 91 153 240 184 322
123 95 154 244 185 325
124 99 155 247 186 327
125 103 156 251 187 329
126 108 157 254 188 332
127 112 158 258 189 334
128 116 159 261 190 336
129 121 160 264 191 339
130 126 161 267 192 341
131 131 162 270 193 343
132 136 163 273 194 346
133 142 164 275 195 348
134 147 165 278 196 350
135 153 166 280 197 353
136 159 167 283 198 355
137 164 168 285 199 357
138 170 169 287 200 358
Freeboard at intermediate length shall be obtained by liner interpolation. The increase in the
case of vessel s of more than 200 met res in length shall be such amount as the Director -General
may det ermine in each particular case.
(3) Type ‘B’ vessel s, which in position 1 have hatchways fitted with hatch covers
complying with the requirements of sub-paragraph (2) of paragraph 9 of the First
Schedule shall, except as provided in sub-paragraph s (4) to (9) inclusive, be
assigned freeboards based on Table B of Part V.
(4) Any type ‘B’ vessel of over 100 m in length may be assigned freeboards less than
those required under sub-paragraph (3), provided that, in relation to the amount of
reduction granted, the Assigning Authority is satisfied that:
(a) the measures provided for the protection of the crew are adequate;
(b) the freeing arrangements are adequate;
(c) the covers in position 1 and 2 comply with the provi sions of sub-paragraph s (1)
through (5) and (7) of paragraph 9 ; and
(d) the vessel , when loaded in accordance with the requirements of sub-paragraph (7),
shall be able to withstand the flooding of any compartment or compartments, with an
assumed permeability of 0.95, consequent upon the damage assumptions specified in
sub-paragraph (8), and shall remain afloat in a satisfactory condition of equilibrium, as
specified in sub-paragraph (9). In such a vessel , if over 150 m in length, the machinery
space shall be treated as a floodable compartment, but with a permeability of 0.85.
(5) In calculating the freeboards for type ’B’ vessel s which comply with the requirements
of sub-paragraph s (4), (7), (8) and (9), the values from Table B of Part V shall not be
reduced by mo re than 60% of the difference between the tabular values in Table A
and Table B of Part V for the appropriate vessel lengths.
(6) Type ‘B’ -100 freeboard: -
(a) The reduction in tabular freeboard allowed under sub-paragraph (5) may be increased
up to the total diffe rence between the values in Table A and Table B of Part V on
condition that the vessel complies with the requirements of:
(i) Part III, other than paragraph 23 of the First Schedule as if it were a type
‘A’ vessel ;
(ii) sub-paragraph (4), (7) and (9); and
(iii) sub-paragraph (8), provided that throughout the length of the vessel any
one transverse bulkhead will be assumed to be damaged, such that two
adjacent fore and aft compartments shall be flooded simultaneously,
except tha t such damage will not apply to the boundary bulkheads of a
machinery space.
(b) In such a vessel , if over 150 m in length, the machinery space shall be treated as a
floodable compartment, but with a permeability of 0.85.
(7) Initial condition of loading: The init ial condition of loading before flooding shall be
determined as follows:
(a) the vessel is loaded to its summer load waterline on an imaginary even keel.
(b) when calculating the vertical centre of gravity, the following principles apply:
(i) homogeneous cargo is carr ied;
(ii) all cargo compartments, except those referred to under sub -clause (iii), but
including compartments intended to be partially filled, shall be considered
fully loaded except that in the case of fluid cargoes each compartment shall
be treated as 98% ful l;
(iii) if the vessel is intended to operate at its summer load waterline with empty
compartments, such compartments shall be considered empty, provided the
height of the centre of gravity so calculated is not less than as calculated
under sub -clause(ii);
(iv) 50% o f the individual total capacity of all tanks and spaces fitted to contain
consumable liquids and stores is allowed for. It shall be assumed that for
each type of liquid at least one transverse pair or a single centreline tank
has maximum free surface, and the tank or combination of tanks to be taken
into account shall be those where the effect of free surfaces is the greatest;
in each tank the centre of gravity of the contents shall be taken at the centre
of volume of the tank. The remaining tanks shall be assumed either
completely empty or completely filled, and the distribution of consumable
liquids between these tanks shall be effected so as to obtain the greatest
possible height above the keel for the centre of gravity;
(v) at an angle of heel of not more th an 5° in each compartment containing
liquids, as specified in sub -clause (ii), except that in the case of
compartments containing consumable fluids, as specified in sub -clause (iv),
the maximum free surface effect shall be taken into account. Alternatively ,
the actual free surface effects may be used, provided the methods of
calculation are accep table to the Assigning Authority ;
(vi) weights shall be calculated on the basis of the following values for specific
gravities:
salt water 1.025
fresh water 1.000
oil fuel 0.950
diesel oil 0.900
lubricating oil 0.900.
(8) Damage assumptions: The following principles regarding the character of the
assumed damage apply:
(a) The vertical extent of damage in all cases is assumed to be from the base line upwards
without limit.
(b) The transverse extent of damage is equal to B/5 or 11.5 m, whichever is the lesser,
measured inboard from the side of the vessel perpendicularly to the centre line at the
level of the summer load waterline.
(c) If damage of a lesser extent than specified in clauses (a) and (b) results in a more
severe condition, such lesser extent shall be assumed.
(d) Except where otherwise required by clause (b) of sub -paragraph (6), the flooding shall
be confined to a single compartment between adjacent transverse bulkheads,
provided that the inner longitudinal boundary of the compartment is not in a position
within the transverse extent of assumed damage. Transverse boundary bulkhead s of
wing tanks, which do not extend over the full breadth of the vessel shall be assumed
not to be damaged, provided that they extend beyond the transverse extent of
assumed damage specified in clause (b).
If in a transverse bulkhead there are steps or re cesses of not more than 3 m in
length, located within the transverse extent of assumed damage as defined in
clause (b), such transverse bulkhead may be considered intact and the adjacent
compartment may be floodable singly. If, however, within the transver se extent
of assumed damage there is a step or recess of more than 3 m in length in a
transverse bulkhead, the two compartments adjacent to this bulkhead shall be
considered as flooded. The step formed by the after peak bulkhead and the after
peak tank top shall not be regarded as a step for the purpose of this rule.
(e) Where a main transverse bulkhead is located within the transverse extent of assumed
damage and is stepped in way of a double bottom or side tank by more than 3 m, the
double bottom or side tan ks adjacent to the stepped portion of the main transverse
bulkhead shall be considered as flooded simultaneously. If this side tank has openings
into one or several holds, such as grain feeding holes, such hold or holds shall be
considered as flooded simul taneously. Similarly, in a vessel designed for the carriage
of fluid cargoes, if a side tank has openings into adjacent compartments, such adjacent
compartments shall be considered as empty and as being flooded simultaneously.
This provision is applicable even where such openings are fitted with closing
appliances, except in the case of sluice valves fitted in bulkheads between tanks and
where the valves are controlled from the deck. Manhole covers with closely spaced
bolts are considered equivalent to the un-pierced bulkhead, except in the case of
openings in topside tanks making the topside tanks common to the holds.
(f) Where the flooding of any two adjacent fore and aft compartments is envisaged, main
transverse watertight bulkheads shall be spaced at least 1/3 L2/3 or 14.5 m, whichever
is the lesser, in order to be considered effective. Where transverse bulkheads are
spaced at a lesser distance, one or more of these bulkheads shall be assumed as non -
existent in order to achieve the minimum spacing between bu lkheads.
(9) Condition of equilibrium: The condition of equilibrium after flooding shall be regarded
as satisfactory provided:
(a) The final waterline after flooding, taking into account sinkage, heel and trim, is below
the lower edge of any opening through which progressive downflooding may take
place. Such openings shall include air pipes, ventilators (even if they comply with sub-
paragraph (4) of paragraph 12 ) and openings which are closed by means of
weathertight doors (even if they comply with paragraph 5) or hatch covers (even if they
comply with paragraph 9 and may exclude those openings closed by means of
manhole covers and flush scuttles (which comply with paragraph 11), cargo hatch
covers of the type described in paragraph 2, remotely operated sliding watertight
doors, and side scuttles of the non -opening type (which comply with paragraph 16).
However, in the case of doors separating a main machinery space from a steering
gear compartment, watertight doors may be of a hinged, quick -acting type kept closed
at sea whilst not in use, provi ded also that the lower sill of such doors is above the
summer load waterline.
(b) If pipes, ducts or tunnels are situated within the assumed extent of damage penetration
as defined in clause (b) of sub paragraph (8) , arrangements shall be made so that
progres sive flooding cannot thereby extend to compartments other than those
assumed to be floodable in the calculation for each case of damage.
(c) The angle of heel due to unsymmetrical flooding does not exceed 15°. If no part of the
deck is immersed, an angle of he el of up to 17° may be accepted.
(d) The metacentric height in the flooded condition is positive.
(e) When any part of the deck outside the compartment assumed flooded in a particular
case of damage is immersed, or in any case where the margin of stability in the flooded
condition may be considered doubtful, the residual stability is to be investigated. It may
be regarded as sufficient if the righting lever curve has a minimum range of 20° beyond
the position of equilibrium with a maximum righting lever of at least 0.1 m within this
range. The area under the righting lever curve within this range shall be not less than
0.0175 m.rad. The Assigning Authority shall give consideration to the potential hazard
presented by protected or unprotected openings which may becom e temporarily
immersed within the range of residual stability.
(f) The Assigning Authority is satisfied that the stability is sufficient during intermediate
stages of flooding.
(10) The tabular freeboard for a type ‘B’ vessel of between 24 m and 100 m in length
having enclosed superstructures with an effective length of up to 35% of the length
of the vessel shall be increased by:
where L is the length of the vessel in m; and
E1 is the effective length E of superstructure in m as defined in sub-paragraph (4) of
paragraph 8 , but excluding the length of trunks.
(11) In the case of a vessel the block co -efficient (Cb) of which exceeds 0.68 the
freeboard calculated in respect of the vessel in accordance with applicable sub-
paragraph s above shall be multiplied by the factor.
The block coefficient is not to be taken greater than 1.0.
(12) The basic freeboard of a Type ‘B’ vessel is that calculated in accordance with sub-
paragraph s (1) to (11) above. The basic freeboard duly corrected in accordance with
paragraphs 5 to 12 of this Schedule but subject to the proviso to sub-paragraph (1) of
paragraph 2 shall be assigned as the summer freeboard of the vessel .
5. Correction for depth . — (1) If the depth for freeboard D exceeds L/15 the freeboard shall
be increased by (D -L/15) R millimeters where R is L /0.48 at lengths less than 120 metres
and 250 at 120 metres length and above.
(2) If the depth for freeboard D is less than L/15, no reduction s hall be made except
in a vessel with an enclosed superstructure covering at least 0.6L amidships, with a
complete trunk, or combination of detached enclosed super -structures and trunks
which extend all fore and aft, where the freeboard shall be reduced at the rate
specified in sub-paragraph (1).
(3) Where the height of superstructure or trunk is less than the standard height, the
reduction shall be in the ratio of the actual to the standard height as defined in
paragraph 8 below.
6. Correction for position of deck line . — Where the actual depth to the upper edge of the
deck line is greater or less than D, the difference between the depths shall be added to or
deducted from the freeboard .
7. Correction for recesses in fre eboard deck . — (1) Where a recess is arranged in the
freeboard deck, and it does not extend to the sides of the vessel , the freeboard calculated
without regard to the recess shall be corrected for the consequent loss of buoyancy. The
correction shall be e qual to the value obtained by dividing the volume of the recess by the
waterplane area of the vessel at 85% of the least moulded depth (see Figure 7-1).
(2) The correction shall be an addition to the freeboard obtained after the other
corrections have been a pplied, except bow height correction.
(3) Where the freeboard, corrected for lost buoyancy as above, is greater than the
minimum geometric freeboard determined on the basis of a moulded depth measured
to the bottom of the recess, the latter value may be used.
Figure 7-1
Correction is the addition to freeboard equal to:
8. Standard Superstructure and correction: Standard height, length and effective length
of superstructures . —(1) The standard height of a superstructure shall be the height
appropriate to the vessel 's length L determined in accordance with the following Table 8-1:
Table 8-1
Vessel s Length(L)
(metre) Standard Height (metres)
Raised Quarterdeck All other superstructure
30 or less
125 or more 0.9
1.2
1.8 1.8
1.8
2.3
Standard heigh ts for intermediate length of vessel shall be obtained by linear interpolation .
(2) Length of Superstructure:
(a) Subject to clauses (b) and (c), the length of a superstructure(s) shall be the mean
length of the parts of the superstructure which lie wit hin the le ngth of the vessel (L).
Where a superstructure bulkhead is recessed, the effective length of the
superstructure shall be reduced by an amount equal to the area of the recess in
plan view divided by the breadth of the superstructure at the midlength of the
recess. Where the recess is unsymmetrical about the centreline, the largest portion
of the recess shall be considered as applying to both sides of the vessel . A recess
need not be decked over.
(b) Where the end bulkhead of an enclosed superstructure extends in a fair convex curve
beyond its intersection with the superstructure sides, the length of the superstructure
may be increased on the basis of an equivalent plane bulkhead. This increase shall
be two -thirds of the fore and aft extent of the curvature. The m aximum curvature which
may be taken into account in determining this increase is one -half the breadth of the
superstructure at the point of intersection of the curved end of the superstructure with
its side.
(c) Where there is an extension to a superstructure, which extension has a breadth on
each side of the centre line at least 30% of the breadth of the vessel , the effective
length of the superstructure may be increased by considering an equivalent
superstructure bulkhead in the form of a parabola. This parab ola shall extend from the
extension at the centreline and pass through the junction of the actual superstructure
bulkhead with the sides of the extension and extend to the sides of the vessel . This
parabola shall be completely contained within the boundary of the superstructure and
its extensions.
If the superstructure is set -in from the side, up to the limit allowed under clause (19)
Sub paragraph A of paragraph 1 of the First schedule , the equivalent bulkhead shall
be calculated on the basis of the actual breadth of the superstructure (and not the
breadth of the vessel ).
(3) Superstructures which have sloped end bulkheads shall be dealt with in the following
manner:
(a) When the height of superstructure, clear of the slope, is equal to or smaller than the
standard height, length S is to be obtained as shown in Figure 8-1.
(b) When the height is greater than the standard, length S is to be obtained as shown in
Figure 8-2.
(c) The foregoing will apply only when the slope, related to the base line, is 15° or greater.
Where th e slope is less than 15°, the configuration shall be treated as sheer .
Figure 8-1 Height of superstructure equal to or smaller than the standard height h
Figure 8-2 Height of superstructure greater than the standard height
(4) The effective length of a su perstructure (E) shall be as follows: -
Subject to clause (b), E in the case of an enclosed superstructure of standard height
shall be either:
(a) its length S, or
(b) if the superstructure is set in from the sides of the vessel , its length S modified in the
ratio b/Bs, where ---
'b' is the breadth of the superstructure at the middle of its length , and
'Bs' is the breadth of the vessel at the middle of the length of the superstructure (s)
Where a superstructure is set -in for a part of its length, this modificatio n shall be
applied only to the set -in part.
(5) ‘E’ in the case of an enclosed superstructure of less than standard height shall be its
length S reduced in the ratio of the actual height of the superstructure to its standard
height. Where the height exceeds t he standard, no increase shall be made to the
effective length of the superstructure.
Where the height, clear of the slope, of a superstructure which has sloped end
bulkheads is less than the standard height, its effective length E shall be its length S
as obtained from Figure 8-1, reduced in the ratio of the actual height to the standard
height.
Where a poop or forecastle of less than standard height is fitted on a vessel with
excessive sheer but without any superstructure within 0.2L amidships, credit ma y be
given to the height of the poop or forecastle by increasing the actual height by the
difference between the actual and the standard sheer profiles. The deduction for
excess sheer in accordance with sub-paragraph (14) of paragraph 11 is not to be
grant ed.
(6) The effective length of a raised quarter deck, if fitted with an intact front bulkhead,
shall be its length up to a maximum of 0.6L. Where the bulkhead is not intact, the
raised quarter deck shall be treated as a poop of less than standard height.
The maximum effective length of 0.6L of a raised quarterdeck is to be measured from
the after perpendicular, even where a poop is fitted in conjunction with the raised
quarterdeck.
(7) A superstructure which is not an enclosed superstructure shall have no effectiv e
length.
9. Standard height and effective length of trunk . — (1) A trunk or similar structure which does
not extend to the sides of the vessel shall be regarded as efficient on the following conditions:
(a) the trunk is at least as strong as a superstructure;
(b) the hatchways are in the trunk deck, the hatchway coamings and covers comply with
the requirements of paragraph s 8 and 9 of First Schedule and the width of the trunk
deck stringer provides a satisfactory gangway and sufficient lateral stiffness. However,
small access openings with watertight covers may be permitted in the freeboard deck;
(c) a permanent working platform fore and aft fitted with guard rails is provided by the
trunk deck, or by detached trunks connected to superstructures by efficient permanent
gangways;
(d) ventilators are protected by the trunk, by watertight covers or by other equivalent
means;
(e) open rails are fitted on the weather parts of the freeboard deck in way of the trunk for
at least half their length or, alternatively, freeing port area in the lower part of the
bulwarks, subject to sub-paragraph (2) of paragraph 17, of 33% of the total area of the
bulwarks is provided;
(f) the machinery casings are protected by the trunk, by a superstructure of at least
standard height, or by a deckhouse of the same height and of equivalent strength;
(g) the breadth of the trunk is at least 60% of the breadth of the vessel ; and
(h) where there is no superstructure, the length of the t runk is at least 0.6L.
(2) The full length of an efficient trunk reduced in the ratio of its mean breadth to B shall
be its effective length.
(3) The standard height of a trunk is the standard height of a superstructure other than
a raised quarter deck.
(4) Where the height of a trunk is less than the standard height, its effective length shall
be reduced in the ratio of the actual to the standard height. Where the height of
hatchway coamings on the trunk deck is less than that required under paragraph 8,
a reduction from the actual height of trunk shall be made which corresponds to the
difference between the actual and the required height of coaming.
(5) Where the trunk height is less than standard and the trunk hatch coamings a re also
of less than standard height, or omitted entirely, the reduction from the actual height
of trunk on account of insufficient hatch coaming height shall be taken as the
difference between 600 mm and the actual height of coaming, or 600 mm if no hatch
coamings are fitted. Reduction in the actual height of trunk shall not be required in
cases where only small hatches with less than standard height are fitted in the trunk
deck for which dispensation from the requirement of standard coaming height may
be given.
(6) Continuous hatchways may be treated as a trunk in the freeboard computation,
provided the provisions of this sub -paragraph are complied with in all respects.
The trunk deck stringer referred to in clause (b) of sub-paragraph (1) may be fitted
outboa rd of the trunk side bulkhead in association with the following:
(a) the stringer so formed is to provide a clear walkway of at least 450 mm in width on
each side of the vessel ;
(b) the stringer is to be of solid plate, efficiently supported and stiffened;
(c) the stringer is to be as high above the freeboard deck as practicable. In the freeboard
calculation, the trunk height is to be reduced by at least 600 mm or by the actual
difference between the top of the trunk and the stringer, whichever is greater;
(d) hatch co ver securing appliances are to be accessible from the stringer or walkway;
and
(e) the breadth of the trunk is to be measured between the trunk side bulkheads.
(7) Where the trunk adjoining the superstructures such as poop, bridge or forecastle is
included in the calculation of freeboard, openings shall not be arranged in that part
of the bulkhead which is common for the trunk and superstructure. A relaxation may
be made for small openings such as for piping, cable or manholes with covers
attached by means of bolt s.
(8) The sides of a trunk included in the calculation of freeboard shall be intact. Side
scuttles of the non -opening Type ‘A’ nd bolted manhole covers may be allowed.
10. Deduction for superstructure and trunks . — (1) Where the effective length of
superstructure s and trunks of a vessel is 1.0(L), the basic freeboard of the vessel shall be
reduced by an amount determined appropriate to the vessel 's length in accordance with the
following Table 10-1, namely : -
TABLE 10-1
Length of a vessel
L (metre) Reduction in fr eeboard
millimetre
24 350
85 860
122 1070
The reduction in freeboard for intermediate lengths of vessel s shall be obtained by
interpolation.
(2) Where the effective length of superstructure and trunks is less than 1.0(L) the
deduction shall be a per cent ...age obtained from Table 10-2:
TABLE 10-2
Per cent. ..age of deduction for Type ‘A’ and Type ‘B’ vessel s
Total effective length of superstructure and trunks
0 0.1L 0.2L 0.3L 0.4L 0.5L 0.6L 0.7L 0.8L 0.9L 1.0L
Per cent. ..age of
deduction for all
types of
superstructures 0 7 14 21 31 41 52 63 75.3 87.7 100
Per cent. ..ages at intermediate lengths of superstructures and trunks shall be
obtained by linear interpolation.
For vessel s of type ‘B’ where the effective length of a forecastle is less than 0.07L, no
deduction is allowed .
11. Measurement of sheer . — (1) The sheer shall be measured form the deck at side of a line
of reference drawn parallel to the keel throu gh the sheer line at amid ship.
(2) In vessel s designed with a rake of keel, the sheer shall be measur ed in relation to a
reference line drawn parallel to the design load waterline.
(3) In flush deck vessel s and in vessel s with detached superstructures, the sheer shall
be measured at the freeboard deck.
(4) In vessel s with topsides of unusual form in which there i s a step or break in the
topsides, the sheer shall be considered in relation to the equivalent depth amidship.
(5) In vessel s with a superstructure of standard height which extends over the whole
length of the freeboard deck, the sheer shall be measured at the superstructure deck.
Where the height exceeds the standard the least difference (z) between the actual
and the standard heights shall be added to each end ordinate. Similarly, the
intermediate ordinates at distance of 1/6 L and 1/3 L from each perpendicu lar shall
be increased by 0.444Z and 0.111Z respectively. Where there is an enclosed poop
or forecastle superimposed on the superstructure, sheer credit shall be allowed for
such a poop or forecastle, according to the method of sub -paragraph (12) as shown
in Figure 11.1.
(6) Where the deck of an enclosed superstructure has at least the same sheer as the
exposed freeboard deck, the sheer of the enclosed portion of freeboard deck s hall
not be taken into account.
Fig. 11.1
(7) Where an enclosed poop or forecastle i s of standard height with greater sheer than
that of the freeboard deck, or is of more than standard height, an addition to the sheer
of the freeboard deck shall be made as provided in sub -paragraph (12).
Where a poop or forecastle consists of two layers, the method shown in Figure 11.2
shall be used.
Fig.11.2
In Figure s 11.1and 11.2, the following definitions apply ; namely —
Z is as defined in sub-paragraph (5); and
Zv is the end ordinate of a virtual standard parabolic curve taken through the point
"X". If Zv is greater than (Z + h), the end ordinate shall be (Z + h), in which case point
"X" shall be disregarded and curve (2) not taken into account.
When the length of the first tier superstructure is greater than 0.5 l, the virtual
standard parabolic curv e shall commence at amidships as indicated in Figure 11.1.
(8) Standard sheer profile: The ordinate of the standard sheer profile given in the
following Table 11-1; namely: -
Table 11-1
(9) Measurement of variation from standard sheer profile: -
(a) Where the shee r profile differs from the standard, the four ordinates of each profile in
the forward or after half shall be multiplied by the appropriate factors given in Table of
ordinates. The difference between the sums of respective products and those of the
standa rd divided by 8 measures the deficiency or excess of sheer in the forward or
after held. The arithmetical mean of the excess or deficiency in the forward and after
halves measures the excess or deficiency of sheer.
(b) Where the after half of the sheer profil e is greater than the standard and the forward
half is less than the standard, no credit shall be allowed for the part in excess and
deficiency only shall be measured.
(c) Where the forward half of the sheer profile exceeds the standard sheer profile and the
after half of the sheer profile is not less than 75 per cent. of standard sheer profile,
credit shall be allowed for the part in excess. Where the after half of the sheer profile
is less than 50 per cent . of the standard sheer profile, no credit shall be gi ven for the
excess sheer forward. Where the sheer in the half is between 50 per cent. and 75 per
cent. of the standard sheer profile, intermediate allowances may be grant ed for excess
sheer forward.
(10) Where the sheer credit is given for a poop or forecastle the following formula shall
be used:
S=YL'/3L
Where S= sheer credit, to be deducted from the deficiency or added to the excess
of sheer.
Y = difference between actual and standard height of superstructure at forward
and after perpendicular.
L' = mean en closed length of poop or forecastle up to a maximum length of 0.5L.
L = the length of the vessel
The above formula provides a curve in the form of a parabola tangential to the
actual sheer curve at the freeboard deck and intersecting the end ordinate at a
point below the superstructure deck a distance equal to the standard height of a
superstructure. The superstructure deck shall not be less than standard height
above the curve at any point. This curve shall be used in determining the sheer
profile for the forward and after halves of the vessel .
(11) (a) Any excess in the height of a superstructure which does not extend to the after
perpendicular cannot be regarded as contributing to the sheer allowance.
(b) Where the height of a superstructure is less than s tandard, the superstructure deck
shall not be less than the minimum height of the superstructure above the virtual shear
curve at any point. For this purpose Y shall be taken as the difference between the
actual and minimum height of the superstructure at the after/forward perpendicular.
(c) For a raised quarterdeck credit may be given only when the height of this quarterdeck
is greater than the standard height of ’other superstructures’ as defined in paragraph
8, and only for the amount by which the actual height of the raised quarterdeck
exceeds that standard height.
(d) When a poop or a forecastle has sloping end bulkheads, the sheer credit may be
allowed on account of excess height. The formula given in sub -paragrap h (10) shall
be used, the values for Y and L’ being as shown in Figure 11-3.
Figure 11-3
(12) Correction for variations from standard sheer: -
(a) The correction for sheer shall be the deficiency or excess of sheer determined by
clauses (a) to (c) of paragraph 9 inclusive multiplied by
( 0.75 – S1/2L)
where S1 is the total length S of enclosed superstructures as defined in sub-
paragraph 8(2) without trunks .
(13) Where the sheer is less than the standard, the correction for deficiency of sheer
determined in accordance with sub-paragraph (12) shall be added to t he basic
freeboard of the vessel .
(14) subject to sub-paragraph (4), in the case of a vessel having an excess of sheer –
(a) if an enclosed superstructure covers (0.1) L before and (0.1) L abaft amid vessel s, the
correctio n for excess of sheer determined in accordance with sub-paragraph (12) shall
be deducted from t he basic freeboard of the vessel ;
(b) if no enclosed superstructure covers amidships, no deduction shall be made from th e
basic free board of the vessel ;
(c) where an en closed superstructure covers less than 0.1L before and 0.1L abaft
amidships, the deduction shall be ob tained by linear interpolation.
In applying this sub-paragraph , the height of the superstructure shall be related to
its standard height. Where the height of the superstructure or raised quarterdeck
is less than standard, the reduction shall be in the ratio of the actual to the standard
height thereof .
(d) The maximum deduction for excess sheer shall be at the rate of 125 millimetres per
100 metres of lengt h (L).
12. Correction for Minimum Bow Height . — (1) The bow height defined as the vertical distance
at the forward perpendicular between the waterline corresponding to the assigned summer
freeboard and the designed trim and the top of the exposed deck at side s hall be not less
than:
for ships below 250 metres in length,
milliletres;
for ships of 250 metres and above in length,
milliletres;
where L is the length of the ship in metres,
Cb is the block coefficient which is to be taken as not less tha n 0.68.
or,
for ships below 820 feet in length,
inches;
for ships of 820 feet and above in length,
inches;
where L is the length of the ship in feet,
Cb is the block coefficient which is to be taken as not less than 0.68
For vessels to which timber freeboards are assigned, the summer freeboard (and not
the timber summer freeboard) is to be assumed when applying this sub paragraph
(2) Where the bow height required in this sub-paragraph is obtained by sheer, the sheer
shall extend for at least 15 % of the length of the vessel measured from the forward
perpendicular. Where it is obtained by fitting a superstructure, such superstructure
shall extend from the stem to a point at least 0.07L abaft the forward perpendicular,
and shall be enclosed as defi ned in the First Schedule .
(3) Vessel s which, to suit exceptional operational requirements, cannot meet the
requirements of sub-paragraph s (1) and (2) of this paragraph may be given special
consideration by the Director -General .
(4) (a) The sheer of the forecastl e deck may be taken into account, even if the length of
the forecastle is less than 0.15L, but greater than 0.07L, provided that the forecastle
height is not less than one half of standard height of superstructure as defined in
paragraph 8 of the Second Schedule between 0.07L and the forward perpendicular.
(b) Where the forecastle height is less than one half of the standard height of
superstructure, as defined in paragraph 8, the credited bow height may be determined
as follows:
(i) Where the freeboard deck has sheer extending from abaft 0.15L, by a
parabolic curve having its origin at 0.15L abaft the forward perpendicular at
a height equal to the midship depth of the vessel , extended through the point
of intersection of forecastle bulkhead and deck, and up to a point at the
forward perpendicular not higher than the level of the forecastle deck (as
illustrated in Figure 12-1). However, if the value of the height denoted h t in
Figure 12-1 is smaller than the value of the height denoted h b then h t may
be replaced by h b in the available bow height.
(ii) Where the freeboard deck has sheer extending for less than 0.15L or has
no sheer, by a line from the forecastle deck at side at 0.07L extended
parallel to the base line to the forward perpendicular (as illustrated in Figure
12-2).
Figure 12-1
Figure 12-2
hf = Half standard height of superstructure as defined in paragraph 8.
(5) All vessel s assigned a Type ‘B’ freeboard, other than oil tankers, chemical tankers
and gas carriers, shall have additional reserve buoyancy in the fore end. Within the
range of 0.15L abaft of the forward perpendicular, the sum of the projected area
between the summe r load waterline and the deck at side (A1 and A2 in Figure 12-3)
and the projected area of an enclosed superstructure, if fitted, (A3) shall not be less
than:
where:
Fmin is calculated by: F min = (F 0 x f1) + f 2;
F0 is the tabular freeboard, in mm, taken from Table B, corrected for sub-paragraph
(5) of paragraph 4 or sub-paragraph (6) of paragraph 4 , as applicable;
f1 is the correction for block coefficient given in sub-paragraph (11) of paragraph 4 ;
and
f2 is the correction for depth, in mm, given in paragraph 5.
Figure 12-3
PART III
TIMBER FREEBOARD
13. Summer timber freeboard . — (1) There shall first be ascertained the freeboard appropriate
to the vessel under the provisions of sub -paragraphs (1), (2), and (10) to (11) of paragraph
4, corrected as necessary in accordance with the provisions of paragraphs 5 to 6 of this
Schedule .
(2) Deduction for the effective length of superstructures shall be made from the
freeboard obtained pursuant to sub - paragraph (1) in accordance with sub -
paragraphs (1) and (2) of paragraph 10 but substituting the following Table 13-1 for
the Table ‘Per cent. ..age of Deductio n for Type ‘A’ and Type ‘B’ vessel s.
Table 13-1
Total effective length of superstructure
0 0.1L 0.2L 0.3L 0.4L 0.5L 0.6L 0.7L 0.8L 0.9L 1.0L
Per cent. ..age of
deduction for all
types of
superstructures 20 31 42 53 64 70 76 82 88 94 100
Per cent. ..age at immediate lengths of superstructures shall be obtained by liner
interpolation.
(3) The freeboard so far obtained pursuant to the preceding sub - paragraph s shall then
be corrected in accordance with paragraph s 11 and 12, and the freeboard so
corrected shall be the Summer Timber Freebo ard to be assigned to the vessel .
14. Other timber freeboards . — (1) The Winter timber freeboard shall be obtai ned by adding to
the Summer timber free board one thirty -sixth (1/36th) of the sum mer timber draught of the
vessel .
(2) The winter north atlantic timber freeboard shall be same as the Winter North Atlantic
Freeboard assigned to the vessel .
(3) The tropical timber freeboard shall be obtained by deducting from the summer timber
freeboard one forty eight (1/48th) of the summer timber draught o f the vessel .
(4) The fresh water timber freeboard shall , be obtained by deducting from the Summer
Timber freeboard the quantity --
∆/40T centimeters.
Where ∆ is the displacement in salt water in metric tons at the waterline which will
when load lines have been marked on the vessel 's side correspond to the Summer
Timber load line, and T represents metric tons per centimetre immersion in salt water
at that waterline.
In any case in which the displacement at the waterline cannot be ascertained the
deduction shall be one forty eighth (1/48th) of the sum mer timber draught of the vessel .
(5) Timber freeboards may be assigned to vessel s with red uced Type ‘B’ freeboards,
provided the timber freeboards are calculated on the basis of the ordinary Type ‘B’
freeboard.
(6) The timber winter mark and/or the timber winter north atlantic mark shall be placed
at the same level as the reduced Type ‘B’ winter ma rk when the computed timber
winter mark and/or the computed timber winter north atlantic mark fall below the
reduced Type ‘B’ winter mark.
PART IV
FREEBOARD FOR OTHER VESSEL S
15. Tugs . —The freeboard to be assigned to tugs shall be freeboards determined in accordance
with provisions of Part II of this Schedule increased by such amounts as the Director -General
may direct in each case.
16. Vessel s without means of propulsion . — (1) A lighter, barge or other vessel without
independent means of propulsion shall be assigned a freeboard in accordance with the
provisions of these rules. Barges which meet the requirements of sub- paragraph (1) of
paragraph 2 of First Schedule and sub- paragraph (4) of paragraph 3 of Second Schedule
may be assigned Type ‘A’ . freeboards:
(2) The assig ning authority shall especially consider the stability of barges with cargo on
the weather deck. Deck cargo can only be carried on barges to which the ordinary
Type ‘B’ freeboard is assigned.
(3) However, in the case of barges which are unmanned, the requireme nts of paragraph
20 of the First Schedule and paragraph 12 of the Second Schedule shall not apply.
(4) Such unmanned barges which have on the freeboard deck only small access
openings closed by watertight gasketed c overs of steel or equivalent material may
be assigned a freeboard 25% less than those calculated in accordance with these
rules.
17. Vessel s with special construction features . — The freeboard to be assigned to vessel s
with constructional features such as to r ender freeboard calculated in accordance with the
other Parts of this Schedule unreasonable or impracticable shall be especially determined by
the Director -General in each particular case.
18. Conditions for assigning freeboards less than minimum freeboard . — The Director -
General shall consider applications for the assignment of a freeboard reduced to 5/8 ( Table
B), ½ ( Table B-60) or ½ ( Table B-100) subject to a minimum freeboard of 150 mm (6 inches)
and to the foll owing conditions, namely: --
(1) the strength of th e vessel shall be adequate at the draught associated with the
decreased freeboard;
(2) the vessel s shall be of the "hopper" type, i.e. fitted with bottom doors in the shell or
having other similar means capable of quickly jettisoning the cargo under all sea -
going conditions and in an emergency. The cargo releasing arrangements on
vessel s assigned a freeboard less than 5/8 ( Table B) shall be capable of jettisoning
sufficient cargo within 4 minutes to enable the requirements of sub -paragraph (5)
below to be com plied with. In each case details of the arrangements are to be
submitted for examination and approval ;
(3) the operational limits shall not normally exceed 20 miles from land ;
(4) the intact stability criteria specified in Part I of the Third Schedule shall be ac hieved
at the proposed decreased freeboard ;
(5) when a freeboard equivalent to ½ ( Table B-60) is assigned, the vessel shall be
capable of surviving in a manner stated in clause (d) of sub -paragraph (4) of
paragraph 4 of Part II of this Schedule after sustaini ng damage, to the total extent
indicated in sub -paragraph (8) of paragraph 4 of Part II of this Schedule to any one
compartment (including the engine room) ;
(6) when a freeboard equivalent to ½ ( Table B-100) is assigned, the vessel shall be
capable of survivin g in a manner specified in sub -clause (iii) of clause (a) of sub -
paragraph (6) of paragraph 4 of Part II of this Schedule after sustaining damage, to
the total extent indicated in sub - paragraph (8) of paragraph 4 of Part II of the this
Schedule to the en gine room or to any other two adjacent fore and aft compartments.
Note : - In the damage stability calculation it may be assumed that a proportion of the
cargo is capable of being jettisoned immediately after the collision provided the cargo
releasing arr angements are so designed that they will operate after the vessel has
sustained the total assumed damage.
(7) Draught indicators shall be fitted to vessel s requiring freeboards of ½ (B -60) or less.
(8) A special working load line mark in RED shall be marked on vessel sides with disc
762 mms abaft nor mal marks, in all such cases.
19. Existing vessel s from 24 metre to 100 metres in length . — Vessel s of length range 24 to
100 metres, engaged in harbour maintenance, dredgers, hoppers, barges, tugs and crafts
engaged in ser vice between vessel and shore, or for domestic voyages along with coasts of
India may continue to be assigned free boards, under the Indian Merchant Shipping (Load
Line) Rules, 1979 made under the Merchant Shipping Act, 1956 (44 of 1958); as it existed
prior to its repeal
Provided that —
(1) the conditions of assignment, more particularly the ones relating to hatch closing
appliances, are brought up to the requirements of these rules as far as is r easonable
and practicable ; and
(2) no increase in the summer draugh t corresponding to a decrease in the geometric
freeboards is made under the terms of these rules.
20. Minimum bow height of coastal vessel s below 60 metres in length . — Vessel s engaged
on the coasting trade of India lf less than 60 metres in length performing voyages during the
course of which they are at no time more than 20 miles from the nearest land shall be required
to have a minimum bow height which shall not be less than the aggregate of the tabular
freeboard and the standard sheer at the forward perpend icular applicable to the vessel :
Provided that the Director -General may dispense with the requirement of minimum bow
height where exceptional operational requirements are involved.
PART V
TABULAR FREEBOARD
The following is Freeboard Table A referred to in sub -paragraph (3) of paragraph 1 of Part I of
this Schedule
TABLE A
FREEBOARD TABLE FOR TYPE "A" VESSEL S
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
24 200 138 1770 252 3024
25 208 139 1787 253 3030
26 217 140 1803 254 3036
27 225 141 1820 255 3042
28 233 142 1837 256 3048
29 242 143 1853 257 3054
30 250 144 1870 258 3060
31 258 145 1886 259 3066
32 267 146 1903 260 3072
33 275 147 1919 261 3078
34 283 148 1935 262 3084
35 292 149 1952 263 3089
36 300 150 1968 264 3095
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
37 308 151 1984 265 3101
38 316 152 2000 266 3106
39 325 153 2016 267 3112
40 334 154 2032 268 3117
41 344 155 2048 269 3123
42 354 156 2064 270 3128
43 364 157 2080 271 3133
44 374 158 2096 272 3138
45 385 159 2111 273 3143
46 396 160 2126 274 3148
47 408 161 2141 275 3153
48 420 162 2155 276 3158
49 432 163 2169 277 3163
50 443 164 2184 278 3167
51 455 165 2198 279 3172
52 467 166 2212 280 3176
53 478 167 2226 281 3181
54 490 168 2240 282 3185
55 503 169 2254 283 3189
56 516 170 2268 284 3194
57 530 171 2281 285 3198
58 544 172 2294 286 3202
59 559 173 2307 287 3207
60 573 174 2320 288 3211
61 587 175 2332 289 3215
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
62 600 176 2345 290 3220
63 613 177 2357 291 3224
64 626 178 2369 292 3228
65 639 179 2381 293 3233
66 653 180 2393 294 3237
67 666 181 2405 295 3241
68 680 182 2416 296 3246
69 693 183 2428 297 3250
70 706 184 2440 298 3254
71 720 185 2451 299 3258
72 733 186 2463 300 3262
73 746 187 2474 301 3266
74 760 188 2486 302 3270
75 773 189 2497 303 3274
76 786 190 2508 304 3278
77 800 191 2519 305 3281
78 814 192 2530 306 3285
79 828 193 2541 307 3288
80 841 194 2552 308 3292
81 855 195 2562 309 3295
82 869 196 2572 310 3298
83 883 197 2582 311 3302
84 897 198 2592 312 3305
85 911 199 2602 313 3308
86 926 200 2612 314 3312
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
87 940 201 2622 315 3315
88 955 202 2632 316 3318
89 969 203 2641 317 3322
90 984 204 2650 318 3325
91 999 205 2659 319 3328
92 1014 206 2669 320 3331
93 1029 207 2678 321 3334
94 1044 208 2687 322 3337
95 1059 209 2696 323 3339
96 1074 210 2705 324 3342
97 1089 211 2714 325 3345
98 1105 212 2723 326 3347
99 1120 213 2732 327 3350
100 1135 214 2741 328 3353
101 1151 215 2749 329 3355
102 1166 216 2758 330 3358
103 1181 217 2767 331 3361
104 1196 218 2775 332 3363
105 1212 219 2784 333 3366
106 1228 220 2792 334 3368
107 1244 221 2801 335 3371
108 1260 222 2809 336 3373
109 1276 223 2817 337 3375
110 1293 224 2825 338 3378
111 1309 225 2833 339 3380
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
112 1326 226 2841 340 3882
113 1342 227 2849 341 3385
114 1359 228 2857 342 3387
115 1376 229 2865 343 3389
116 1392 230 2872 344 3992
117 1409 231 2880 345 3394
118 1426 232 2888 346 3396
119 1442 233 2895 347 3399
120 1459 234 2903 348 3401
121 1476 235 2910 349 3403
122 1494 236 2918 350 3406
123 1511 237 2925 351 3408
124 1528 238 2932 352 3410
125 1546 239 2939 353 3412
126 1563 240 2946 354 3414
127 1580 241 2953 355 3416
128 1598 242 2959 356 3418
129 1615 243 2966 357 3420
130 1632 244 2973 358 3422
131 1650 245 2979 359 3423
132 1667 246 2986 360 3425
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
133 1684 247 2993 361 3427
134 1702 248 3000 362 3428
135 1719 249 3006 263 3430
136 1736 250 3012 364 3432
137 1753 251 3018 365 3433
Note: Freeboard at intermediate lengths of vessel s shall be obtained by linear interpolat ion.
The following is Freeboard Table B referred to in sub - paragraph (3) of paragraph 1 of Part 1 of
this Schedule .
TABLE B
FREEBOARD TABLE FOR TYPE "B" VESSEL
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
24 200 138 2065 252 4045
25 208 139 2087 253 4058
26 217 140 2109 254 4072
27 225 141 2130 255 4085
28 233 142 2151 256 4098
29 242 143 2171 257 4112
30 250 144 2190 258 4125
31 258 145 2209 259 4139
32 267 146 2229 260 4152
33 275 147 2250 261 4165
34 283 148 2271 262 4177
35 292 149 2293 263 4189
36 300 150 2315 264 4201
37 308 151 2334 265 4214
38 316 152 2354 266 4227
39 325 153 2375 267 4240
40 334 154 2396 268 4252
41 344 155 2418 269 4264
42 354 156 2440 270 4276
43 364 157 2460 271 4289
44 374 158 2480 272 4302
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
45 385 159 2500 273 4315
46 396 160 2520 274 4327
47 408 161 2540 275 4339
48 420 162 2560 276 4350
49 432 163 2580 277 4362
50 443 164 2600 278 4373
51 455 165 2620 279 4385
52 467 166 2640 280 4397
53 478 167 2660 281 4408
54 490 168 2680 282 4420
55 503 169 2698 283 4432
56 516 170 2716 284 4443
57 530 171 2835 285 4455
58 544 172 2754 286 4467
59 559 173 2774 287 4478
60 573 174 2795 288 4490
61 587 175 2815 289 4502
62 601 176 2835 290 4513
63 615 177 2855 291 4525
64 629 178 2875 292 4537
65 644 179 2895 293 4548
66 659 180 2915 294 4560
67 674 181 2933 295 4572
68 689 182 2952 296 4583
69 705 183 2970 297 4595
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
70 721 184 2988 298 4607
71 738 185 3007 299 4618
72 754 186 3025 300 4630
73 769 187 3044 301 4642
74 784 188 3062 302 4654
75 800 189 3080 303 4665
76 816 190 3098 304 4676
77 833 191 3116 305 4686
78 850 192 3134 306 4695
79 868 193 3151 307 4704
80 887 194 3167 308 4714
81 905 195 3185 309 4725
82 923 196 3202 310 4736
83 942 197 3219 311 4748
84 960 198 3235 312 4757
85 978 199 3249 313 4768
86 996 200 3264 314 4779
87 1015 201 3280 315 4790
88 1034 202 3296 316 4801
89 1054 203 3313 317 4812
90 1075 204 3330 318 4823
91 1096 205 3347 319 4834
92 1116 206 3363 320 4844
93 1135 207 3380 321 4855
94 1154 208 3397 322 4866
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
95 1172 209 3413 323 4878
96 1190 210 3430 324 4890
97 1209 211 3445 325 4899
98 1229 212 3460 326 4909
99 1250 213 3475 327 4920
100 1271 214 3490 328 4931
101 1293 215 3505 329 4943
102 1315 216 3520 330 4955
103 1337 217 3537 331 4965
104 1359 218 3554 332 4975
105 1380 219 3570 333 4985
106 1401 220 3586 334 4995
107 1421 221 3601 335 5005
108 1440 222 3615 336 5015
109 1459 223 3630 337 5025
110 1479 224 3645 338 5035
111 1500 225 3660 339 5045
112 1521 226 3675 340 5055
113 1543 227 3690 341 5065
114 1565 228 3705 342 5075
115 1587 229 3720 343 5086
116 1609 230 3735 344 5097
117 1630 231 3750 345 5108
118 1651 232 3765 346 5119
119 1671 233 3780 347 5130
Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres) Length of
vessel
(metres) Freeboard
(millimetres)
120 1690 234 3795 348 5140
121 1709 235 3808 349 5150
122 1729 236 3821 350 5160
123 1750 237 3835 351 5170
124 1771 238 3849 352 5180
125 1793 239 3864 353 5190
126 1815 240 3880 354 5200
127 1837 241 3893 355 5210
128 1859 242 3906 356 5220
129 1880 243 3920 357 5230
130 1901 244 3934 358 5240
131 1921 245 3949 359 5250
132 1940 246 3965 360 5260
133 1959 247 3978 361 5268
134 1979 248 3992 362 5276
135 2000 249 4005 363 5285
136 2021 250 4018 364 5294
137 2043 251 4032 365 5303
Note : - Freeboard at intermediate lengths of vessel shall be obta ined by linear interpolation.
.
THIRD SCHEDULE
(See Rule 37 and 39 )
STABILITY AND LOADING
PART I
CRITERIA OF STABILITY
1. The stability of the vessel in all intended loading conditions shall be adequate at all
drafts not submerging the appropriate freeboard mar ks. Unless otherwise required by
the Director -General having regard to the special design features and the service
conditions of a vessel , the stability of the vessel will be considered satisfactory upon
compliance with the following criteria or equivalent as specified in the IMO Intact
Stability Code, as amended from time to time :-
(1) The area under the righting lever (GZ) curve shall not be less than: -
(a) 0.055 metre -radia ns upto an angel of 30 degrees ;
(b) 0.09 metre -radians to an angle of either 40 degrees or an angle of downflooding Ɵ f if
that be less. The angle Ɵ f is the angle at which the lower edges of any openings in
the hull, superstructures or deckhouses, being openings which cannot be closed
weathertight and which are likely to cause pro gressive flooding are immersed;
(c) 0.03 metre -radians between the angles of heel of 30 and 40 degrees or between 30
and Ɵ f degrees, if Ɵ f is less than 40 degrees.
(d) The righting lever (GZ) shall be at least 0.20 metre, at an angle of heel equal to or
greater than 30 degrees.
(e) The maximum righting lever (GZ) shall occur at an angle of heel not less than 25
degrees.
(f) The initial transverse metacentric height sha ll be not less than 0.15 meter.
(2) The Director -General may allow a timber deck cargo vessel to comply with such
lesser criter ia of stability than those of the preceding paragraph having fully reviewed
the circumstances of cargo stowage and lashin g and other service conditions.
(3) In addition to complying with the provisions of the above sub -paragraph s (1) and (2),
the vessel master shall also exercise due precaution and discretion as regards
navigation, cargo stowa ge and lashing, etc.
(4) To assess if a vessel complies with the stability criteria in sub-paragraphs (1) and
(2), the stability data shall be based on inclining test of that vessel , as provided by
the rule 31 of these rules, un less exempted by the same rule.
PART II
STABILITY AND LOADING CONDITIONS
2. The stability characteristics of at least the following loading and ballasting conditions shall be
duly investigated in order to ensure compliance with the criteria of stability laid d own in Part I
of this Schedule .
(1) Light Condition: If the vessel has permanent ballast, the light condition shall include
two conditions, e.g. (i) light condition with such ballast, and (ii) light condition wit hout
such ballast.
(2) Ballast Conditions: These shall include two conditions, e.g. (i) ballast departure
condition with full stores, fresh water, fuel and other consumable stores but without
cargo, and (ii) ballast arrival condition with only 10 per cent . stores, fresh water fu el
and other consumable stores.
(3) Standard Loading Conditions: These shall include (i) the departure condition with the
vessel loaded to the summer load line with homogenous cargo filling all spaces
available for cargo, except cargo spaces where this is clearly inappropriate, for
example, in the case of cargo spaces in a vessel which are intended to be used
exclusively for the carriage of vehicles or of containers and (ii) the arrival condition
with the vessel similarly loaded but with only 10 per cent. .. stores, fresh water, f uel
and other consumable store.
(4) Service Loading Condition: These shall include the departure and arrival conditions
of additional loading conditions for which the vessel is designed or which service
conditions are desi red by the vessel owners .
3. For passenger vessel s, the full number of passengers and their luggage shall be included in
conditions under sub -paragraphs (2) to (4) of paragraph 2 above and the effect of the
movement of passengers and the heeling of the vessel during turning maneuvers shall also
be duly examined having regard to the adverse effect on the stability of the vessel .
4. Specific calculations and loading conditions for certain vessel types may comply with the
provisions of International Code on Intact S tability, 2008.
PART III
METHOD AND FORM OF STABILITY CALCULATIONS
5. For the purposes of Part VI of these paragraph s relating to stability and loading the method
of stability calculations and the form of the stability booklet shall, so far as practicable, be in
acco rdance with the following paragraph s.
6. The stability book shall include the following particulars:
(1) The vessel 's name, official number, port of registry, gross and register tonnages,
principal dimensions, displacement, deadweight and draught to the summer lo ad
line, suitably stated in the begi nning of the stability booklet.
(2) A profile view and if practicable, plan views of the vessel drawn to scale showing with
their names outlines of all main compartments, tanks, storerooms and
accommodation spaces.
(3) General a rrangement plans showing watertight compartments, closures, vents,
downflooding angles, permanent ballast, allowable deck loadings and freeboard
diagrams.
(4) The capacity and the positions of the vertical and longitudinal centers of gravity of
compartments av ailable for the carriage of cargo, fuel, stores, feed water, fresh water
and water ballast. The sounding Table s and free surface data for each tank.
(5) In the case of a vehicle ferry, the vertical centre of gravity of compartments for the
carriage of vehicles shall be based on the estimated centers of gravity of the vehicles
and not on the volu metric centers of compartments.
(6) The estimated total weight of (a) passengers and their effects and (b) crew and their
effects, and the centers of gravity (longitudinal a nd vertical) of each such total
weight. In determining such centers of gravity, passengers and crew shall be
assumed to be distributed about the vessel in the spaces they will normally occupy
including the highest decks to which either or both have access .
(7) The estimated weight and the disposition and the centers of gravity of the maximum
amount of deck cargo which the vessel may reasonably be expected to carry on an
exposed deck. The estimated weight shall include in the case of deck cargo likely to
absor b water the estimated weight of water likely to be so absorbed and allowed for
in arrival conditions, such weight in the case of timber deck cargo being taken to be
10 per cent by weight.
(8) The effect on stability of free surface in tanks in the vessel in wh ich liquids may be
carried, including an example on how to correct the metacentric height for the free
surface effect.
(9) General precautions for preventing unintentional flooding and any other necessary
guidance for the safe operation of the vessel under nor mal and emergency
conditions.
(10) inclining test report for the vessel , or where the stability data is based on a sister
vessel , the inclining test report of that sister vessel along with the lightship
measurement r eport for the vessel in question.
7. The following diagrams or approved tabular statements in lieu thereof shall be provided in the
stability booklet:
(1) A diagram of the deadweight -displacement scale illustrating load line mark and the
load lines with particulars of the corres ponding freeboards, displacement metric tons
and centimetre immersion, and deadweight tons corresponding to a range of mean
draughts extending between the waterline representing the deepest load line and the
water line of the vessel in light con dition.
(2) A diagram or tabular statement showing the hydrostatic particulars of the vessel ,
including: -
(a) the heights of the transverse and longitudinal metacentre above base line.
(b) the positions of the center of buoyancy, both vertical and longitudinal,
(c) the positions of the longitudinal centers of floatation.
(d) the values of the moments to change trim by one centimetre.
(e) the values of the cross -sectional areas (Bonjean's Cur ves) and the water plane areas.
for a range of mean draughts extending at least between the waterline representing
the deepest load line and the waterline of the vessel in light condition.
Where a tabular statement issued the intervals between such draughts shall be
sufficiently close to permit accurate interpolation. In the case of vessel s having raked
keels, the same datum for the height of centers of buoyancy and metacentres shall
be used as for the centers of gravity referred to in paragraph 6.
(3) A diagram of cross -curves of stability showing clearly the keel points on the inclined
axis from which the rig hting levers are measured and the trim which has been
assumed. In the case of vessel s having raked keels where datum other than the top
of the keel has been use, full information is to be provided as to its position.
(4) A sufficient number of cross - curves f or an adequate range of the angles of inclination
and each such curve extending over the displacement and trim range from the light
condition of the vessel to the deepest load line, shall be provided sot that the
statistical stability curved of righting l evers over all positive ranges could be obtained
with suffic ient accuracy by interpolation.
(5) An illustrative example shall be given showing how to obtain a curve of righting levers
(GZ) from the cross curves.
(6) information on loading restrictions, such as max imum KG or minimum GM curve or
Table that can be used to determine compliance with the applicable stability criteria;
8. The stability characteristics of each of the loading conditions required to be investigated in
Part II of this Schedule shall be represent ed in the stability booklet by the following diagrams
and statements:
(1) A profile diagram of the vessel drawn to a suitable small scale showing the
dispositions of the mai n components of the deadweight;
(2) SuiTable tabular statements including the lightweight, the disposition and moments
of components of the deadweight, the final displacement, the corresponding position
of the center of gravity, the metacentre, the free surface effects and the metacentric
height duly corr ected for free surface effect ;
9. In derivi ng the cross -curves of stability account may be taken of:
(1) The stability and buoyancy provided by enclosed superstructure and efficient trunks,
such structures being described in paragraphs 8 and 9 of the Second Schedule .
(2) The stability and buoyancy provided by the following structures may also be taken
into account in deriving the cross -curves if the Director -General so approves, in each
particular case, having regard to their location, integrity and means of closure.
(a) Superstructure located above the supe rstructure deck;
(b) Deck houses on the freeboard deck, whether wholly or in part only;
(c) Trunks and hatchway struct ure on or above freeboard deck.
(3) Additionally, if the Director -General so approves, in the case of a vessel carrying
timber deck cargo, the volume of timber deck cargo or part thereof, may be taken
into account in deriving a supplementary curve of stability appropriate to the vessel
when carrying such cargo.
(4) Where the buoyancy of a superstructure or any other structure is taken into account
in the c alculations of stability, suitable endorsement shall always be made on the
cross -curves clearly indicating the extent of such inclusion. Notices shall also be
conspicuously displayed near weathertight doors or any other special openings to
the effect that these openings must be closed weathertight at sea on account of
stability.
FOURTH SCHEDULE
(see rules 6 and 34 )
CONDITIONS OF ASSIGNMENT
ISSUED BY THE GOVERNMENT OF INDIA
INTERNATIONAL CONVENTION ON LOAD LINES, 1966
RECORD OF CONDITIONS OF ASSIGNMENT LOAD LINE SURVEY
____________________________________________________________________________________
_
Name of Ship . . . . . . . . .
Port of Registry . . . . . . . . .
Nationality . . . . . . . .
Distinctive Number or Lette rs . . . . . . .
Shipbuilders . . . . . . . .
Yard Number . . . . . . . . .
Date of Build/Conversion . . . . . . .
Freeboard assigned as a ship of Type . . . . .
Classification . . . . . . . . .
Date and place of initial survey . . . . . .
____ ________________________________________________________________________________
FIFTH SCHEDULE
(see rules 8 and 14)
Certificate forms
INTERNATIONAL LOAD LINE CERTIFICATE
Issued under the provisions of the Interna tional Convention on Load Lines, 1966 as modified by the
Protocol of 1988 relating thereto, under the authority of the Government of India by the Director -General
of Maritime Administration .
Name of ship
Distinctive number or letters
Port of Registry
Length (L) as defined in article 2(8) (metres)
Gross Tonnage
IMO number
Freeboard assigned as A new ship/An existing ship
Type of ship Type ‘A’ /Type ‘B’ with reduced/increased freeboard
Freeboard from deck line Load Line
Tropical mm (T) mm above (S)
Summer mm (S) Upper edge of line through centre of ring
Winter mm (W) mm below (S)
Winter North Atlantic mm (WNA) mm below (S)
Timber Tropical mm (LT) mm above (LS)
Timber Summer mm (LS) mm above (S)
Timber Winter mm (LW) mm below (LS)
Timber Winter North Atlantic mm (LWNA) mm below (LS)
Allowance for fresh Water for all freeboards other than timber __________ mm
Allowance for Fresh Water for timber fre eboards _________ mm
The upper edge of the deck line from which these freeboards are measured is _________ mm
_______________________________________________deck at side.
This is to Certify:
1. That the ship has been surveyed in accordance with the requirements of Article 14 of the
Convention;
2. That the survey showed that the freeboards have been assigned and load lines shown on page 1
have been marked in accordance with the Convention.
This certificate is valid until _____________________ ____
Subject to annual surveys in accordance with Article 14(1) (c) of the Convention.
Issued at on _____________________________
The undersigned declares that he is duly authorized by the said Government to issue this certificate.
_________ ____________________
NOTES:
1. When a ship departs from a port situated on a river or inland waters, deeper loading shall be
permitted corresponding to the weight of fuel and all other materials required for consumption
between the point of depart ure and the sea.
2. When a ship is in fresh water of unit density the appropriate load line may be submerged by the
amount of fresh water allowance shown above. Where the density is other than unity, the allowance
shall be made proportional to the difference between 1.025 and the actual density.
3. This certificate must be kept framed and posted up in a conspicuous place on board the ship, so
long as the certificate remains in force and the ship is in use.
4. Insert the date of expiry as specified by the Director -General in accordance with article 19(1) of the
Convention. The day and the month of this date correspond to the anniversary date as defined in
article 2(9) of the Convention, unless amended in accordance with article 19(8) of the Convention.
5. Completion da te of the survey on which this certificate is based: dd/mm/yyyy.
ENDORSEMENT FOR ANNUAL SURVEY
This is to certify that, at an annual survey required by article 14(1)(c) of the Convention, the ship was found
to comply with the relevant requirements of t he Convention.
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Annual Survey
Place of Survey
________________________________ __
Date Surveyor
Annual Survey
Place of Survey
__________________________________
Date Surveyor
ANNUAL SURVEY IN ACCORDANCE WITH ARTICLE 19(8)(C)
This is to certify that, at an annual survey in accordance with article 19(8)(c) of the Convention, the ship
was found to comply with the relevant requirements of the Convention.
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Note: Official stamp to be put for each endorsement
ENDORSEMENT TO EXTEN D THE CERTIFICATE IF VALID FOR LESS THAN 5 (five) YEARS AND
WHERE ARTICLE 19(3) APPLIES
The ship complies with the relevant requirements of the Convention, and the Certificate shall, in accordance
with Article 19(3) of the Convention, be accepted as valid until……………..
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT WHERE THE RENEWAL SURVEY HAS BEEN COMPLETED AND ARTICLE 19(4)
APPLIES
The ship complies with the relevant requirements of the Convention, and this Certifica te shall, in accordance
with Article 19(4) of the Convention, be accepted as valid until………………
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT TO EXTEND THE VALIDITY OF THE CERTIFICATE UNTIL REACHING THE PORT OF
SURVEY OR FOR A PERIOD OF GRACE WHERE ARTICLE 19(5) OR 19(6) APPLIES
This Certificate shall, in accordance with Article 19(5) / 19(6) of the Convention, be accepted as valid
until……………..
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT FOR ADVANCEMENT OF ANNIVERSARY DATE WHERE ARTICLE 19(8) APPLIES
In accordance with Article 19(8) of the Convention, the new anniversary date is…………….
Place of Survey
__________________________________
Date Surveyor
In accordance with A rticle 19(8) of the Convention, the new anniversary date is…………………..
Place of Survey
__________________________________
Date Surveyor
Note: Official stamp to be put for each endorsement
INDIA LOAD LINE CERTIFICATE
Issued under the provisions of the Merchant Shipping (Load Line) Rules, 2026 , by Government of India
Name of Ship Distinctive
Number or
Letters Port of Registry Length (L) as defined by rules
made under sections 116 and
121 of the Merchant Shipping
Act, 2025 Gross
Tonnage
Freeboard Assigned as* Type of Ship*
A new ship Type “A”
An existing ship Type “B”
Type “B” with reduced freeboard
Type “B” with increased freeboard
*Delete whatever is inapplicable
Freeboard from: Deck Line Load Line
Tropical mm (T) mm above (S)
Summer mm (S) Upper edge of line through centre of ring
Winter mm(W) mm below (S)
Allowance for fresh water for all freeboards………………..mm
Note: - Freeboard an d load line which is not applicable need not be entered on the certificate
The upper edge of the deck line from which freeboard are measured is ……………..mm
………………………………………………………………… deck at side.
This is to certify that the ship has been surveyed and the fre eboards and load lines shown above have been
assigned in accordance with the rules made under sections 116 and 121 of the Merchant Shipping Act,
2025 (24 of 2025) .
This Certificate is valid until …………………………
Subject to periodical inspection in accordance w ith the provisions of the rules made sections 116 and 121
of the Merchant Shipping Act, 2025 (24 of 2025) .
Completion date of the survey on which this certificate is based: ……………………..
Issued at ……………….. on the ……………. Day of ……………………..20
____ ___________________________________
This is to certify that at a periodical inspection required by the rules made under sections 116 and 121 of
the Merchant Shipping Act, 2025 (24 of 2025) ; this ship was found to comply with the relevant provisio ns
of the said rules.
Place ……………………………………………….. Date …………………………………………………
…………………………………………………………
Surveyor
Place ……………………………………………….. Date …………………………………………………
…………………………………………………………
Surveyor
Place ………………… …………………………….. Date ………………………………………………
…………………………………………………………
Surveyor
Place ……………………………………………….. Date …………………………………………………
…………………………………………………………
Surveyor
Note: -
(1) When a ship departs from a port situa ted on a river or inland waters, deeper loading shall
be permitted corresponding to the weight of fuel and all other materials required for
consumption between the point of departure and the sea.
(2) When a ship is in fresh water of unit density the appropria te load line may be submerged
by the amount of the fresh water allowance shown above. Where the density is other than
unity, an allowance shall be made proportional to the difference between 1.025 and the
actual density.
INTERNATIONAL LOAD LINE EXEMPTION CERTIFICATE
Issued under the provisions of the International Convention on Load Lines, 1966 as modified by the
Protocol of 1988 relating thereto, under the authority of the Government of India by the Director -General
of Maritime Administration .
Name of ship
Distinctive number or letters
Port of Registry
Length (L) as defined in article 2(8) (metres)
Gross Tonnage
IMO number
This is to certify that the above -ment ioned ship is exempted from the provisions of the 1966 Convention,
under the authority conferred by Article 6(2)/Article 6(4)* of the Convention referred to above.
* Delete whichever is inapplicable.
The provisions of the Convention from which the ship i s exempted under Article 6(2) are:
…………………………………………………………………………………………………………………………
……………………………………………………………………………………
The voyage for which exemption is granted under Article 6(4) is:
From: …………………………………….
To: ………………………………………
Conditions, if any, on which the e xemption is granted under either Article 6(2) or Article 6(4):
This certificate is valid until ……………………………………..
Subject to annual surveys in accordance with Article 14(1) (c) of the Convention.
Issued at ……………………. on ………………………………………..
The undersigned de clares that he is duly authorized by the said Government to issue this certificate.
_______________________________________
ENDORSEMENT FOR ANNUAL SURVEY
This is to certify that, at an annual survey required by article 14(1)(c) of the Co nvention, the ship was found
to comply with the relevant requirements of the Convention.
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Annual Survey
Place of Survey
__________________________________
Date Surveyor
ANNUAL SURVEY IN ACCORDANCE WITH ARTICLE 19(8)(C)
This is to ce rtify that, at an annual survey in accordance with article 19(8)(c) of the Convention, the ship
was found to comply with the relevant requirements of the Convention.
Annual Survey
Place of Survey
__________________________________
Date Surveyor
Note: Official stamp to be put for each endorsement
ENDORSEMENT TO EXTEND THE CERTIFICATE IF VALID FOR LESS THAN 5 (five) YEARS AND
WHERE ARTICLE 19(3) APPLIES
The ship complies with the relevant requirements of the Convention, and the Certificate shall, in accordance
with Article 19(3) of the Convention, be accepted as valid until……………..
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT WHERE THE RENEWAL SURVEY HAS BEEN COMPLETED AND ARTICLE 19(4)
APPLIES
The ship com plies with the relevant requirements of the Convention, and this Certificate shall, in accordance
with Article 19(4) of the Convention, be accepted as valid until………………
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT T O EXTEND THE VALIDITY OF THE CERTIFICATE UNTIL REACHING THE PORT OF
SURVEY OR FOR A PERIOD OF GRACE WHERE ARTICLE 19(5) OR 19(6) APPLIES
This Certificate shall, in accordance with Article 19(5) / 19(6) of the Convention, be accepted as valid
until……………..
Place of Survey
__________________________________
Date Surveyor
ENDORSEMENT FOR ADVANCEMENT OF ANNIVERSARY DATE WHERE ARTICLE 19(8) APPLIES
In accordance with Article 19(8) of the Convention, the new anniversary date is…………….
Place of Survey
__________________________________
Date Surveyor
In accordance with Article 19(8) of the Convention, the new anniversary date is…………………..
Place of Survey
__________________________________
Date Surveyor
Note: Official stamp to be put for each endorsement
SIXTH SCHEDULE
(See rules 18, 19, 25 and 27 )
ZONES, AREAS AND SEASONAL PERIODS
1. The zones and areas in this Schedule are, in general, based on the following criteria:
Summer - not more than 10 per cent winds of force 8 Beaufort (34 knots) or mo re.
Tropical - not more than 1 per cent winds of force 8 Beaufort (34 knots) or more. Not more than
one tropical storm in ten years in an area of 50 square in any one separate calendar month.
In certain special areas, for practical reasons, some degree o f relaxation has been found
Accep table .
A chart is attached to this Schedule to illustrate the zones and areas defined below.
2. Northern Winter Seasonal Zones and Area
(1) North Atlantic Winter Seasonal Zones I and II
(a) The North Atlantic Winter Seasonal Zone I lies within the meridian of longitude 500W from the
coast of Greenland to latitude 450N, thence the parallel of latitude 450N, thence the parallel of
latitude 450N to longitude 150W, thence the meridian of longitude 150W to latitude 600N, thence
the para llel of latitude 600N to the Greenwich Meridian, thence this meridian northwards.
Seasonal periods:
WINTER: 16 October to 15 April
SUMMER: 16 April to 15 October.
(b) The North Atlantic Winter Seasonal Zone II lies within the meridian of longitude 68030'W from
the coast of the United States to latitude 400N, thence the rhumb line to the point latitude 360N,
longitude 730W, thence the parallel of latitude 360N to longitude 250W and thence the rhumb
line to Cape Toriñana.
Excluded from this zone are the Nort h Atlantic Winter Seasonal Zone I and the Baltic Sea
bounded by the parallel of the latitude of The Skaw in the Skagerrak.
Seasonal periods:
WINTER: 1 November to 31 March
SUMMER: 1 April to 31 October.
(2) North Atlantic Winter Seasonal Area
The boundary of the North Atlantic Winter Seasonal Area is -
the meridian of longitude 68030'W from the coast of the United States to latitude 400N, thence
the rhumb line to the southernmost intersection of the meridian of longitude 610W with the coast
of Canada and t hence the east coasts of Canada and the United States.
Seasonal periods:
For vessel s over 100 metres (328 feet) in length:
WINTER: 16 December to 15 February
SUMMER: 16 February to 15 December.
For vessel s of 100 metres (328 feet) and under in length:
WINTER: 1 November to 31 March
SUMMER: 1 April to 31 October.
(3) North Pacific Winter Seasonal Zone
The s outhern boundary of the North Pacific Winter Seasonal Zone is -
the parallel of latitude 50N from the east coast of the USSR to the west coast of Sak halin,
thence the west coast of Sakhalin to the southern extremity of Kril'on, thence the rhumb line to
Wakkanai, Hokkaido, Japan, thence the east and south coasts of Hokkaido to longitude 1450E,
thence the meridian of longitude 1450E to latitude 350N, the nce the parallel of latitude 350N to
longitude 1500W and thence the rhumb line to the southern extremity of Dall Island, Alaska.
Seasonal periods:
WINTER: 16 October to 15 April
SUMMER: 16 April to 15 October.
3. Southern Winter Seasonal Zone
(4) The norther n boundary of the Southern Winter Seasonal Zone is -
the rhumb line from the east coast of the American continent at Cape Tres Puntas to the point
latitude 340S, longitude 500W, thence the parallel of latitude 340S to longitude 170E, thence the
rhumb line to the point latitude 35010'S, longitude 200E, thence the rhumb line to the point latitude
340S, longitude 280E, thence along the rhumb line to the point latitude 35030'S, longitude 1180E,
and thence the rhumb line to Cape Grim on the northwest coast of Ta smania; thence along the
north and east coasts of Tasmania to the southernmost point of Bruny Island, thence the rhumb
line to Black Rock Point on Stewart Island, thence the rhumb line to the point latitude 470S,
longitude 1700E, thence along the rhumb lin e to the point latitude 330S, longitude 1700W, and
thence the parallel of latitude 330S to the west coast of the American continent.
Seasonal periods:
WINTER: 16 April to 15 October
SUMMER: 16 October to 15 April.
4. Tropical Zone
(1) Northern boundary of th e Tropical Zone
The northern boundary of the Tropical Zone is -
the parallel of latitude 130N from the east coast of the American continent to longitude 600W,
thence the rhumb line to the point latitude 100N longitude 580W, thence the parallel of latitude
100N to longitude 200W, thence the meridian of longitude 200W to latitude 300N and thence the
parallel of latitude 300N to the west coast of Africa; from the east coast of Africa the parallel of
latitude 80N to longitude 700E, thence the meridian of longi tude 700E to latitude 130N, thence
the parallel of latitude 130N to the west coast of India; thence the south coast of India to latitude
10030'N on the east coast of India, thence the rhumb line to the point latitude 90N, longitude
820E, thence the meridia n of longitude 820E to latitude 80N, thence the parallel of latitude 80N
to the west coast of Malaysia, thence the coast of South -East Asia to the east coast of Vietnam
at latitude 100N, thence the parallel of latitude 100N to longitude 1450E, thence the m eridian of
longitude 1450E to latitude 130N and thence the parallel of latitude 130N to the west coast of
the American continent.
Saigon is to be considered as being on the boundary line of the Tropical Zone and the Seasonal
Tropical Area.
(2) Southern bound ary of the Tropical Zone
The southern boundary of the Tropical Zone is -
the rhumb line from the Port of Santos, Brazil, to the point where the meridian of longitude
400W intersects the Tropic of Capricorn; thence the Tropic of Capricorn to the west coast of
Africa; from the east coast of Africa the parallel of latitude 200S to the west coast of
Madagascar, thence the west and north coasts of Madagascar to longitude 500E, thence the
meridian of longitude 500E to latitude 100S, thence the parallel of latitu de 100S to longitude
980E, thence the rhumb line to Port Darwin, Australia, thence the coasts of Australia and
Wessel Island eastwards to Cape Wessel, thence the parallel of latitude 110S to the west side
of Cape York; from the east side of Cape York the p arallel of latitude 110S to longitude 1500W,
thence the rhumb line to the point latitude 260S, longitude 750W, and thence the rhumb line to
the west coast of the American continent at latitude 300S.
Coquimbo and Santos are to be considered as being on the boundary line of the Tropical and
Summer Zones.
(3) Areas to be included in the Tropical Zone
The following areas are to be treated as included in the Tropical Zone -
a) The Suez Canal, the Red Sea and the Gulf of Aden, from Port Said to the meridian of
longit ude 450E. Aden and Berbera are to be considered as being on the boundary line of
the Tropical Zone and the Seasonal Tropical Area.
b) The Persian Gulf to the meridian of longitude 590E.
c) The area bounded by the parallel of latitude 220S from the east coast o f Australia to the
Great Barrier Reef, thence the Great Barrier Reef to latitude 110S. The northern boundary
of the area is the southern boundary of the Tropical Zone.
5. Seasonal Tropical Areas
The following are Seasonal Tropical Areas:
(1) In the North Atlan tic
An area bounded -
on the north by the rhumb line from Cape Catoche, Yucatan, to Cape San Antonio, Cuba, the
north coast of Cuba to latitude 200N and thence the parallel of latitude 200N to longitude 200W;
on the west by the coast of the American cont inent;
on the south and east by the northern boundary of the Tropical Zone.
Seasonal periods:
TROPICAL: 1 November to 15 July
SUMMER: 16 July to 31 October.
(2) In the Arabian Sea
An area bounded -
on the west by the coast of Africa, the meridian of long itude 450E in the Gulf of Aden, the coast
of South Arabia and the meridian of longitude 590E in the Gulf of Oman;
on the north and east by the coasts of Pakistan and India;
on the south by the northern boundary of the Tropical Zone.
Seasonal periods:
TROPICAL: 1 September to 31 May
SUMMER: 1 June to 31 August.
(3) In the Bay of Bengal
The Bay of Bengal north of the northern boundary of the Tropical Zone.
Seasonal periods:
TROPICAL: 1 December to 30 April
SUMMER: 1 May to 30 November.
(4) In the South Ind ian Ocean
(a) An area bounded -
on the north and west by the southern boundary of the Tropical Zone and the east coast of
Madagascar;
on the south by the parallel of latitude 200S;
on the east by the rhumb line from the point latitude 200S, longitude 500E, to the point
latitude 150S, longitude 51030'E, and thence by the meridian of longitude 51030'E to latitude
100S.
Seasonal periods:
TROPICAL: 1 April to 30 November
SUMMER: 1 December to 31 March.
(b) An area bounded -
on the north by the southern boundary of the Tropical Zone;
on the east by the coast of Australia;
on the south by the parallel of latitude 150S from longitude 51030'E, to longitude 1200E and
thence the meridian of longitude 1200E to the coast of Australia;
on the west by the meridian of lo ngitude 51030'E.
Seasonal periods:
TROPICAL: 1 May to 30 November
SUMMER: 1 December to 30 April.
(5) In the China Sea
An area bounded -
on the west and north by the coasts of Vietnam and China from latitude 100N to Hong Kong;
on the east by the rhumb li ne from Hong Kong to the Port of Sual (Luzon Island) and the west
coasts of the Islands of Luzon, Samar and Leyte to latitude 100N;
on the south by the parallel of latitude 100N.
Hong Kong and Sual are to be considered as being on the boundary of the Sea sonal Tropical
Area and Summer Zone.
Seasonal periods:
TROPICAL: 21 January to 30 April
SUMMER: 1 May to 20 January.
(6) In the North Pacific
(a) An area bounded -
on the north by the parallel of latitude 250N;
on the west by the meridian of longitude 1600E;
on the south by the parallel of latitude 130N;
on the east by the meridian of longitude 1300W.
Seasonal periods:
TROPICAL: 1 April to 31 October
SUMMER: 1 November to 31 March.
(b) An area bounded -
on the north and east by the west coast of the America n continent;
on the west by the meridian of longitude 1230W from the coast of the American continent
to latitude 330N and by the rhumb line from the point latitude 330N, longitude 1230W, to the
point latitude 130N, longitude 1050W;
on the south by the pa rallel of latitude 130N.
Seasonal periods:
TROPICAL: 1 March to 30 June and 1 November to 30 November
SUMMER: 1 July to 31 October and 1 December to 28/29 February.
(7) In the South Pacific
(a) The Gulf of Carpentaria south of latitude 110S.
Seasonal periods :
TROPICAL: 1 April to 30 November
SUMMER: 1 December to 31 March.
(b) An area bounded -
on the north and east by the southern boundary of the Tropical Zone;
on the south by the Tropic of Capricorn from the east coast of Australia to longitude 1500W,
thenc e by the meridian of longitude 1500W to latitude 200S and thence by the parallel of
latitude 200S to the point where it intersects the southern boundary of the Tropical Zone;
on the west by the boundaries of the area within the Great Barrier Reef included in the
Tropical Zone and by the east coast of Australia.
Seasonal periods:
TROPICAL: 1 April to 30 November
SUMMER: 1 December to 31 March.
6. Summer Zones
The remaining areas constitute the Summer Zones.
However, for vessel s of 100 metres (328 feet) a nd under in length, the area bounded -
on the north and west by the east coast of the United States;
on the east by the meridian of longitude 68030'W from the coast of the United States to latitude
400N and thence by the rhumb line to the point latitude 3 60N, longitude 730W;
on the south by the parallel of latitude 360N; is a Winter Seasonal Area.
Seasonal periods:
WINTER: 1 November to 31 March
SUMMER: 1 April to 31 October.
7. Enclosed seas
(1) Baltic Sea
This sea bounded by the parallel of latitude of T he Skaw in the Skagerrak is included in the
Summer Zones.
However, for vessel s of 100 metres (328 feet) and under in length, it is a Winter Seasonal Area.
Seasonal periods:
WINTER: 1 November to 31 March
SUMMER: 1 April to 31 October.
(2) Black Sea
This sea is included in the Summer Zones.
However, for vessel s of 100 metres (328 feet) and under in length, the area north of latitude
440N is a Winter Seasonal Area.
Seasonal periods:
WINTER: 1 December to 28/29 February
SUMMER: 1 March to 30 November.
(3) Mediterranean
This sea is included in the Summer Zones.
However, for vessel s of 100 metres (328 feet) and under in length, the area bounded -
on the north and west by the coasts of France and Spain and the meridian of longitude 30E
from the coast of Spain to latitude 400N;
on the south by the parallel of latitude 400N from longitude 30E to the west coast of Sardinia;
on the east by the west and north coasts of Sardinia from latitude 400N to longitude 90E, thence
by the meridian o f longitude 90E to the south coast of Corsica, thence by the west and north
coasts of Corsica to longitude 90E and thence by the rhumb line to Cape Sicié; is a Winter
Seasonal Area.
Seasonal periods:
WINTER: 16 December to 15 March
SUMMER: 16 March to 1 5 December.
(4) Sea of Japan
This sea south of latitude 500N is included in the Summer Zones.
However, for vessel s of 100 metres (328 feet) and under in length, the area between the
parallel of latitude 500N and the rhumb line from the east coast of Korea a t Latitude 380N to the
west coast of Hokkaido, Japan, at latitude 43012'N is a Winter Seasonal Area.
Seasonal periods:
WINTER: 1 December to 28/29 February
SUMMER: 1 March to 30 November.
8. The Winter North Atlantic Load Line
The part of the North Atla ntic referred to in sub -paragraph 2(4) of Second Schedule comprises:
(1) that part of the North Atlantic Winter Seasonal Zone II which lies between the meridians of 15W
and 50W;
(2) the whole of the North Atlantic Winter Seasonal Zone I, the Shetland Islands to be considered
as being on the boundary.
[F. No. SY-19014/199/2025 -MG-Part(5)]
MUKESH MANGAL , Addl. Secy .
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi -110064
and Published by the Controller of Publication s, Delhi -110054.
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