33 C.F.R. § 160.203
(a) This subpart applies to the following vessels that are bound for or departing from ports or places within the navigable waters of the United States, as defined in 33 CFR 2.36(a), which includes internal waters and the territorial seas of the United States, and any deepwater port as defined in 33 CFR 148.5:
[USCG-2002-11865, 68 FR 9543, Feb. 28, 2003, as amended by USCG-2004-19963, 70 FR 74669, Dec. 16, 2005. Redesignated and amended at 80 FR 5330, 5331, Jan. 30, 2015]