e-CFR banner

Home
gpo.gov
govinfo.gov

e-CFR Navigation Aids

Browse

Simple Search

Advanced Search

 — Boolean

 — Proximity

 

Search History

Search Tips

Corrections

Latest Updates

User Info

FAQs

Agency List

Incorporation By Reference

eCFR logo

Related Resources

 

Electronic Code of Federal Regulations

e-CFR data is current as of December 4, 2019

Title 46Chapter ISubchapter SPart 172Subpart G → §172.180


Title 46: Shipping
PART 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


§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 23 or 47.6 feet (( 13 )L 23 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 23 or 47.6 feet (( 13 )L 23 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.

1Damage 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.

2B is measured amidships.

Need assistance?