---
kind: "section"
citation: "46 C.F.R. § 172.110"
title: "46"
number: "172.110"
heading: "Survival conditions."
url: "https://uscodex.org/cfr/46/172.110"
---

# §172.110. Survival conditions.

- (a) Paragraphs [(c)](#c) and [(d)](#d) of this section apply to a hopper barge and [paragraphs (e) through (i)](#e..i) apply to all other tank barges.
- (b) A barge is presumed to survive assumed damage if it meets the following conditions in the final stage of flooding:
- (c) A hopper barge must not heel or trim beyond the angle at which—
  - (1) The deck edge is first submerged; or
  - (2) If the barge has a coaming that is at least 36 inches (91.5 centimeters) in height, the intersection of the deck and the coaming is first submerged, except as provided in [paragraph (d)](#d) of this section.
- (d) A hopper barge must not heel beyond the angle at which the deck edge is first submerged by more than “fa” as defined in [§ 172.090(c)](/cfr/46/172.090.md?p=c).
- (e) Except as provided in paragraphs [(h)](#h) and [(i)](#i) of this section, each tank barge must not heel beyond the angle at which—
  - (1) The deck edge is first submerged; or
  - (2) If the barge has one or more watertight trunks, the deck edge is first submerged by more than “fa” as defined in [§ 172.090(c)](/cfr/46/172.090.md?p=c).
- (f) Except as provided in paragraphs [(h)](#h) and [(i)](#i) of this section, a tank barge must not trim beyond the angle at which—
  - (1) The deck edge is first submerged; or
  - (2) If the barge has one or more watertight trunks, the intersection of the deck and the trunk is first submerged.
- (g) If a tank barge experiences simultaneous heel and trim, the trim requirements in [paragraph (f)](#f) of this section apply only at the centerline.
- (h) Except as provided in [paragraph (i)](#i) of this section, in no case may any part of the actual cargo tank top be underwater in the final condition of equilibrium.
- (i) If a barge has a “step-down” in hull depth on either or both ends and all cargo tank openings are located on the higher deck level, the deck edge and tank top in the stepped-down area may be submerged.

## 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.