---
kind: "section"
citation: "46 C.F.R. § 171.060"
title: "46"
number: "171.060"
heading: "Watertight subdivision: General."
url: "https://uscodex.org/cfr/46/171.060"
---

# §171.060. Watertight subdivision: General.

- (a) Each of the following vessels must be shown by design calculations to comply with the requirements in [§§ 171.065 through 171.068](/cfr/46/171.065..171.068.md) for Type I subdivision:
  - (1) **Each vessel 100 gross tons or more on an international voyage—** and
  - (2) **Each vessel 150 gross tons or more in ocean service.**
- (b) Each vessel not described in [paragraph (a)](#a) of this section must be shown by design calculations to comply with the requirements in [§§ 171.070 to 171.073](/cfr/46/171.070..171.073.md) for Type II subdivision.
- (c) Except as allowed in [§ 171.070(c)](/cfr/46/171.070.md?p=c), each vessel must have a collision bulkhead.
- (d) Each double-ended ferry that is required by [paragraph (c)](#c) of this section to have a collision bulkhead must also have a second collision bulkhead. One collision bulkhead must be located in each end of the vessel.

## Notes

### Amendments

[CGD 79-023, 48 FR 51017, Nov. 4, 1983, as amended by USCG-2007-0030, 75 FR 78085, Dec. 14, 2010]

### 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.

### Amendments

[CGD 79-023, 48 FR 51017, Nov. 4, 1983, as amended by USCG-2007-0030, 75 FR 78085, Dec. 14, 2010]