---
kind: "section"
citation: "46 C.F.R. § 174.195"
title: "46"
number: "174.195"
heading: "Bulkheads in machinery spaces."
url: "https://uscodex.org/cfr/46/174.195"
---

# §174.195. Bulkheads in machinery spaces.

- (a) The bulkhead in each machinery space of each OSV must be watertight to the bulkhead deck.
- (b) **Each penetration of, and each opening in, a bulkhead in a machinery space must—**
  - (1) Be kept as high and as far inboard as practicable; and
  - (2) Except as provided by [§ 174.210](/cfr/46/174.210.md) of this subpart and by [paragraph (c)](#c) of this section, have means to make it watertight.
- (c) No penetration of a bulkhead in a machinery space by a ventilation duct need have means to make the bulkhead watertight if—
  - (1) Every part of the duct is at least 760 millimeter (30 inches) from the side of the OSV; and
  - (2) **The duct is continuously watertight from the penetration to the main deck.**
- (d) Each penetration of a bulkhead in a machinery space by piping must meet the design requirements for material and pressure in subchapter F of this chapter.

## Notes

### Source

Source: CGD 82-004 and CGD 86-074, 62 FR 49353, Sept. 19, 1997, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 9118, 9119, 9153; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1. Section 174.180 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905.

### Source

Source: CGD 79-023, 48 FR 51048, Nov. 4, 1983, unless otherwise noted.