Statutes, codes, and regulations
Code of Federal Regulations
Title 46 - SHIPPINGChapter I - COAST GUARD, DEPARTMENT OF HOMELAND SECURITYSubchapter S - SUBDIVISION AND STABILITYPart 172 - SPECIAL RULES PERTAINING TO BULK CARGOES
Subpart G - SPECIAL RULES PERTAINING TO A SHIP THAT CARRIES A BULK LIQUEFIED GAS REGULATED UNDER SUBCHAPTER O OF THIS CHAPTER
Section 172.180 - Extent of damage

46 C.F.R. § 172.180

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Current through November 30, 2024
Section 172.180 - Extent of damage

For the purpose of § 172.170 -

(a) Design calculations must include both side and bottom damage, applied separately; and
(b) Damage must consist of the penetrations having the dimensions given in Table 172.180 except that, if the most disabling penetrations would be less than the penetrations given in Table 172.180, the smaller penetration must be assumed.

Table 172.180-Extent of Damage

COLLISION PENETRATION
Longitudinal extent0.495L 2/3 or 47.6 feet ((1/3)L 2/3 or 14.5m) whichever is shorter.
Transverse extent1B/5 or 37.74 feet (11.5m)2 whichever is shorter.
Vertical extentFrom the baseline upward without limit.
GROUNDING PENETRATION AT THE FORWARD END BUT EXCLUDING ANY DAMAGE AFT OF A POINT 0.3L AFT OF THE FORWARD PERPENDICULAR
Longitudinal extent0.495L 2/3 or 47.6 feet ((1/3)L 2/3 or 14.5m) whichever is shorter.
Transverse extentB/6 or 32.81 feet (10m) whichever is shorter.
Vertical extent from the molded line of the shell at the centerlineB/15 or 6.6 feet (2m) whichever is shorter.
GROUNDING PENETRATION AT ANY OTHER LONGITUDINAL POSITION
Longitudinal extentL/10 or 16.41 feet (5m) whichever is shorter.
Transverse extentB/6 or 16.41 feet (5m) whichever is shorter.
Vertical extent from the molded line of the shell at the centerlineB/15 or 6.6 feet (2m) whichever is shorter.

1 Damage applied inboard from the vessel's side at right angles to the centerline at the level of the summer load line assigned under Subchapter E of this chapter.

2 B is measured amidships.

46 C.F.R. §172.180