33 CFR § 173.31
Surrender of certificate of number
August 2, 2023
§ 173.31 Surrender of certificate of number.
A person whose name appears as the owner of a vessel on a certificate of number shall surrender the certificate in a manner prescribed by the issuing authority within 15 days after it becomes invalid under paragraph (b), (c), (d), or (e) of § 173.77.