---
kind: "section"
citation: "46 C.F.R. § 171.113"
title: "46"
number: "171.113"
heading: "Trunks."
url: "https://uscodex.org/cfr/46/171.113"
---

# §171.113. Trunks.

- (a) For the purpose of this section, “trunk” means a large enclosed passageway through any deck or bulkhead of a vessel.
- (b) Each trunk, other than those specified in [paragraph (c)](#c) of this section, must have a watertight door at each end except that a trunk may have a watertight door at one end if—
  - (1) The trunk does not pass through more than one main compartment;
  - (2) The sides of the trunk are not nearer to the shell than is permitted by [§ 171.067(c)](/cfr/46/171.067.md?p=c) for the sides of a recess in a bulkhead; and
  - (3) The vessel complies with the subdivision requirements in this part when the volume of the trunk is included with the volume of the compartment into which it opens.
- (c) Each trunk that provides access from a crew accommodation space and that passes through a main transverse watertight bulkhead must comply with the following:
  - (1) The trunk must be watertight.
  - (2) The trunk, if used for passage at sea, must have at least one end above the margin line and access to the other end of the trunk must be through a watertight door.
  - (3) The trunk must not pass through the first main transverse watertight bulkhead aft of the collision bulkhead.

## Notes

### Authority

Authority: 46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 79-023, 48 FR 51017, Nov. 4, 1983, unless otherwise noted.