---
kind: "section"
citation: "46 C.F.R. § 171.106"
title: "46"
number: "171.106"
heading: "Wells in double bottoms."
url: "https://uscodex.org/cfr/46/171.106"
---

# §171.106. Wells in double bottoms.

- (a) This section applies to each vessel that has a well installed in a double bottom required by [§ 171.105](/cfr/46/171.105.md).
- (b) **Except as provided in paragraph (c) of this section—**
  - (1) The depth of a well must be at least 18 inches (45.7 cm) less than the depth of the double bottom at the centerline; and
  - (2) The well may not extend below the horizontal plane C illustrated in Figure 171.105.
- (c) A well may extend to the outer bottom of a double bottom at the after end of a shaft tunnel.

## 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.