---
kind: "section"
citation: "46 C.F.R. § 170.160"
title: "46"
number: "170.160"
heading: "Specific applicability."
url: "https://uscodex.org/cfr/46/170.160"
---

# §170.160. Specific applicability.

- (a) Except as provided in [paragraphs (b) through (d)](#b..d) of this section, this subpart applies to each vessel.
- (b) This subpart does not apply to any of the following vessels unless the stability of the vessel is questioned by the OCMI:
  - (1) A deck cargo barge that complies with the requirements in [§ 174.020](/cfr/46/174.020.md) of this chapter.
  - (2) A tank vessel that only carries a product listed in [§ 30.25-1](/cfr/46/30.25-1.md) of this chapter and that is—
    - (i) Less than 150 gross tons; or
    - (ii) **A tank barge that operates only in river or lakes, bays, and sounds service.**
  - (3) A sailing school vessel that is an open boat that complies with the requirements in [§ 173.063(e)](/cfr/46/173.063.md?p=e) of this subchapter.
- (c) **This subpart does not apply to the following vessels—**
  - (1) A tank barge that carries a product listed in Table 151.05 of this chapter.
  - (2) **A mobile offshore drilling unit.**
  - (3) A vessel that performs one of the simplified stability proof tests described in [subpart C of part 178](/cfr/46/part178-subpartC.md) of this chapter.
- (d) A vessel that complies with [§ 170.165](/cfr/46/170.165.md) of this part need not comply with §§ [170.170](/cfr/46/170.170.md) and [170.173](/cfr/46/170.173.md) of this part.

## Notes

### Amendments

[CGD 79-023, 48 FR 51010, Nov. 4, 1983, as amended by CGD 83-005, 51 FR 923, Jan. 9, 1986; CGD 85-080, 61 FR 944, Jan. 10, 1996; USCG-2007-29018, 72 FR 53968, Sept. 21, 2007; USCG-2009-0702, 74 FR 49239, Sept. 25, 2009; USCG-2007-0030, 75 FR 78084, Dec. 14, 2010]

### Authority

Authority: 43 U.S.C. 1333; 46 U.S.C. 2103, 3306, 3703; 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 51010, Nov. 4, 1983, unless otherwise noted.

### Amendments

[CGD 79-023, 48 FR 51010, Nov. 4, 1983, as amended by CGD 83-005, 51 FR 923, Jan. 9, 1986; CGD 85-080, 61 FR 944, Jan. 10, 1996; USCG-2007-29018, 72 FR 53968, Sept. 21, 2007; USCG-2009-0702, 74 FR 49239, Sept. 25, 2009; USCG-2007-0030, 75 FR 78084, Dec. 14, 2010]