46 C.F.R. § 42.20-5

Current through May 31, 2024

Section 42.20-5 - Freeboard assignment: Type "B" vessels

(a) Each Type "B" vessel is assigned a freeboard from table 42.20-15(b)(1) that is increased or decreased by the provisions of this section.

(b) Each Type "B" vessel that has a hatchway in position 1, must have the freeboard assigned in accordance with paragraph (a) of this section increased by the amount given in table 42.20-5(b) unless the hatch cover complies with:

(1) Section 42.15-25(d) ; or

(2) Section 42.15-30 .

Table 42.20-5(b)-Freeboard Increase Over Tabular Freeboard for Type "B" Vessels With Hatch Covers Not Complying With § 42.15-25(d) or § 42.15-30 .

[Metric]

Length of ship (meters)	Freeboard increase1 (millimeters)
2108	50
109	52
110	55
111	57
112	59
113	62
114	64
115	68
116	70
117	73
118	76
119	80
120	84
121	87
122	91
123	95
124	99
125	103
126	108
127	112
128	116
129	121
130	126
131	131
132	136
133	142
134	147
135	153
136	159
137	164
138	170
139	175
140	181
141	186
142	191
143	196
144	201
145	206
146	210
147	215
148	219
149	224
150	228
151	232
152	236
153	240
154	244
155	247
156	251
157	254
158	258
159	261
160	264
161	267
162	270
163	273
164	275
165	278
166	280
167	283
168	285
169	287
170	290
171	292
172	294
173	297
174	299
175	301
176	304
177	306
178	308
179	311
180	313
181	315
182	318
183	320
184	322
185	325
186	327
187	329
188	332
189	334
190	336
191	339
192	341
193	343
194	346
195	348
196	350
197	353
198	355
199	357
3200	358

¹ Freeboards at intermediate lengths of ship shall be obtained by linear interpolation.

² 108 and below.

³ Ships above 200 meters in length are subject to individual determination by the Commandant.

[English]

Length of ship (feet)	Freeboard increase1 (inches)
2350	2.0
360	2.3
370	2.6
380	2.9
390	3.3
400	3.7
410	4.2
420	4.7
430	5.2
440	5.8
450	6.4
460	7.0
470	7.6
480	8.2
490	8.7
500	9.2
510	9.6
520	10.0
530	10.4
540	10.7
550	11.0
560	11.4
570	11.8
580	12.1
590	12.5
600	12.8
610	13.1
620	13.4
630	13.6
640	13.9
650	14.1
3660	14.3

¹ Freeboards at intermediate lengths of ship be obtained by linear interpolation.

² 350 and below.

³ Ships above 660 feet in length are subject to individual determination by the Commandant.

(c) Any Type "B" vessel that is greater than 100 meters (328 feet) in length and any hopper dredge meeting the requirements in subpart C of part 44 of this chapter may have a reduced freeboard from that assigned under table 42.20-15(b)(1) in accordance with paragraph (d) or paragraph (e) of this section if-

(1) The measures provided for the protection of the crew are adequate;

(2) The freeing arrangements are adequate; and

(3) The hatchway covers in positions 1 and 2 comply with the provisions of § 42.15-30 and have adequate strength, special care being given to their sealing and securing arrangements.

(d) The freeboards for a Type "B" vessel which comply with paragraph (c) of this section may be reduced up to 60 percent of the total difference between the freeboards in table 42.20-15(b)(1) and table 42.20-15(a)(1) provided that the vessel meets the flooding standard in § 42.20-7 .

(e) The freeboards for a Type "B" vessel which complies with paragraph (c) of this section may be reduced up to the total difference between the freeboard tables referenced in paragraph (d) of this section provided that the vessel meets the flooding standard in § 42.20-8 and the provisions of § 42.15-80 (a), (b) and (d) as if it were a Type "A" vessel.

46 C.F.R. §42.20-5

CGD 79-153, 48 FR 38647, Aug. 25, 1983, as amended by CGD 76-080, 54 FR 36976, Sept. 6, 1989