---
kind: "section"
citation: "46 C.F.R. § 143.500"
title: "46"
number: "143.500"
heading: "Applicability."
url: "https://uscodex.org/cfr/46/143.500"
---

# §143.500. Applicability.

- (a) This subpart applies to a new towing vessel, as defined in [§ 136.110](/cfr/46/136.110.md) of this subchapter, unless it is an excepted vessel.
- (b) Machinery or electrical systems of a novel design, unusual form, or special material must meet section [§ 143.210](/cfr/46/143.210.md).
- (c) Unless otherwise noted in §§ [143.515](/cfr/46/143.515.md) and [143.520](/cfr/46/143.520.md), new towing vessels must also meet the requirements of [subpart B](/cfr/46/subpartB.md) of this part.

## Notes

### Authority

Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation No. 0170.1.

### Source

Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.