33 C.F.R. § 173.51
(a) This subpart applies to each vessel operated on waters subject to the jurisdiction of the United States and on the high seas beyond the territorial seas for vessels owned in the United States that:
[CDG 72-54R, 37 FR 21399, Oct. 7, 1972, as amended by CDG 84-099, 52 FR 47533, Dec. 14, 1987; USCG-2003-14963, 77 FR 18700, Mar. 28, 2012]