33 C.F.R. § 173.29
A person whose name appears as the owner of a vessel on a certificate of number shall, within 15 days, notify the issuing authority in a manner prescribed by the issuing authority of:
[CGD 72-54R, 37 FR 21399, Oct. 7, 1972, as amended by USCG-2003-15404, 68 FR 37742, June 25, 2003]