---
kind: "section"
citation: "33 C.F.R. § 181.23"
title: "33"
number: "181.23"
heading: "Hull identification numbers required."
url: "https://uscodex.org/cfr/33/181.23"
---

# §181.23. Hull identification numbers required.

- (a) A manufacturer must identify each boat produced or imported with primary and secondary hull identification numbers permanently affixed in accordance with [§ 181.29](/cfr/33/181.29.md) of this subpart.
- (b) A person who manufactures or imports a boat for his or her own use and not for sale must obtain the required hull identification number in accordance with the requirements of the issuing authority listed in [33 CFR part 173](/cfr/33/part173.md), appendix A for the boat's State of principal operation and permanently affix the HIN to the boat in accordance with [§ 181.29](/cfr/33/181.29.md) of this subpart.
- (c) No person may assign the same HIN to more than one boat.

## Notes

### Amendments

[USCG-2003-14963, 77 FR 18703, Mar. 28, 2012]

### Source

Source: CGD 79-013, 48 FR 40718, Sept. 9, 1983, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 4302; DHS Delegation 00170.1, Revision No. 01.4.

### Source

Source: CGD 72-60, 37 FR 15779, Aug. 4, 1972, unless otherwise noted.

### Amendments

[USCG-2003-14963, 77 FR 18703, Mar. 28, 2012]