e-CFR Navigation Aids


Simple Search

Advanced Search

 — Boolean

 — Proximity


Search History

Search Tips


Latest Updates

User Info


Agency List

Incorporation By Reference

eCFR logo

Related Resources

Electronic Code of Federal Regulations

We invite you to try out our new beta eCFR site at https://ecfr.federalregister.gov. We have made big changes to make the eCFR easier to use. Be sure to leave feedback using the Help button on the bottom right of each page!

e-CFR data is current as of September 28, 2020

Title 33Chapter ISubchapter SPart 173Subpart B → §173.21

Title 33: Navigation and Navigable Waters
Subpart B—Numbering

§173.21   Certificate of number required.

(a) Except as provided in §§173.13 and 173.17, no person may operate a vessel to which this part applies unless it has on board:

(1) A valid certificate of number or temporary certificate for that vessel issued by the issuing authority in the State in which the vessel is principally operated; or

(2) For the vessel described in paragraph (b) of this section, a copy of the lease or rental agreement, signed by the owner or his or her authorized representative and by the person leasing or renting the vessel, that contains at least:

(i) The vessel number that appears on the certificate of number; and

(ii) The period of time for which the vessel is leased or rented.

(b) Section 12304(a) of Title 46, United States Code, states in part: The certificate of number for a vessel less than 26 feet in length and leased or rented to another for the latter's noncommercial operation of less than 7 days may be retained on shore by the vessel's owner or representative at the place from which the vessel departs or returns to the possession of the owner or the owner's representative.

[CGD 72-54R, 37 FR 21399, Oct. 7, 1972, as amended by CGD 77-117A, 43 FR 17941, Apr. 27, 1978; CGD 89-048, 54 FR 27002, June 27, 1989; USCG-2003-15404, 68 FR 37742, June 25, 2003; USCG-2003-14963, 77 FR 18699, Mar. 28, 2012]

Need assistance?