1625-0056 Stat/Authority

33 CFR 181.23 (up to date as of 12/10/2025)
Hull identification numbers required.

33 CFR 181.23 (Dec. 10, 2025)

This content is from the eCFR and is authoritative but unofficial.

Title 33 —Navigation and Navigable Waters
Chapter I —Coast Guard, Department of Homeland Security
Subchapter S —Boating Safety
Part 181 —Manufacturer Requirements
Subpart C —Identification of Boats
Source: CGD 79-013, 48 FR 40718, Sept. 9, 1983, unless otherwise noted.
Authority: 46 U.S.C. 4302; DHS Delegation 00170.1, Revision No. 01.4.
Source: CGD 72-60, 37 FR 15779, Aug. 4, 1972, unless otherwise noted.

§ 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 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, Appendix A for the boat's State of principal operation and permanently affix the HIN to
the boat in accordance with § 181.29 of this subpart.
(c) No person may assign the same HIN to more than one boat.
[USCG-2003-14963, 77 FR 18703, Mar. 28, 2012]

33 CFR 181.23(c) (enhanced display)

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