46 CFR § 172.235
Extent of damage
April 15, 2021
For the purpose of the calculations required in §172.225—
(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 172.235 except that, if the most disabling penetrations would be less than the penetrations described in this paragraph, the smaller penetration must be assumed.
Table 172.235—Extent of Damage
Open Table
| Collision Penetration | |
| Longitudinal extent | 0.495 L 2⁄3 or 47.6 feet. |
| (1/3 L 2⁄3 or 14.5 m), whichever is less. | |
| Transverse extent | 4 feet 2 inches (1.25 m).1 |
| Vertical extent | From the baseline upward without limit. |
| Grounding Penetration Forward of a Point 0.3L Aft of the Forward Perpendicular | |
| Longitudinal | 0.495 L 2⁄3 or 47.6 feet. |
| (1/3 L 2⁄3 or 14.5 m), whichever is less. | |
| Transverse | B/6 or 32.8 feet (10 m), whichever is less, but not less than 16.4 feet (5 m).1 |
| Vertical extent | 0.75 m from the baseline. |
| Grounding Penetration at Any Other Longitudinal Position | |
| Longitudinal extent | L/10 or 16.4 feet (5 m), whichever is less. |
| Transverse | 4 feet 2 inches (1.25 m). |
| Vertical extent | 2 feet 6 inches (0.75 m) from the baseline. |
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.
Tried the LawStack mobile app?
Join thousands and try LawStack mobile for FREE today.
- Carry the law offline, wherever you go.
- Download CFR, USC, rules, and state law to your mobile device.
