---
kind: "section"
citation: "46 C.F.R. § 154.174"
title: "46"
number: "154.174"
heading: "Transverse contiguous hull structure."
url: "https://uscodex.org/cfr/46/154.174"
---

# §154.174. Transverse contiguous hull structure.

- (a) The transverse contiguous hull structure of a vessel having cargo containment systems without secondary barriers must meet the standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
- (b) The transverse contiguous hull structure of a vessel having cargo containment systems with secondary barriers must be designed for a temperature that is:
  - (1) **Colder than the calculated temperature of this hull structure when—**
    - (i) The temperature of the secondary barrier is the design temperature, and
    - (ii) The ambient cold condition under § [154.176(b)(1)(ii)](/cfr/46/154.176.md?p=b-1-ii) and [(iii)](/cfr/46/154.176.md?p=b-1-iii) are assumed; or
  - (2) Maintained by the heating system under [§ 154.178](/cfr/46/154.178.md).

## Notes

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]