---
kind: "section"
citation: "46 C.F.R. § 172.105"
title: "46"
number: "172.105"
heading: "Extent of damage."
url: "https://uscodex.org/cfr/46/172.105"
---

# §172.105. Extent of damage.


For the purpose of [§ 172.103](/cfr/46/172.103.md), design calculations must include both side and bottom damage, applied separately. Damage must consist of the most disabling penetration up to and including penetrations having the following dimensions:

- (a) Side damage must be assumed to be as follows:
  - (1) **Longitudinal extent—** 6 feet (183 centimeters).
  - (2) **Transverse extent—** 30 inches (76 centimeters).
  - (3) **Vertical extent—** from the baseline upward without limit.
- (b) Bottom damage must be assumed to be 15 inches (38 centimeters) from the baseline upward.

## Notes

### Authority

Authority: 46 U.S.C. 3306, 3703, 5115; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.2.

### Source

Source: CGD 79-023, 48 FR 51040, Nov. 4, 1983, unless otherwise noted.