33 C.F.R. § 175.3
As used in this part:
Boat means any vessel-
Model year means the period beginning June 1 of a year and ending on July 31 of the following year and being designated by the year in which it ends.
Passenger means an individual carried on a vessel except-
Racing shell, rowing scull, racing canoe, and racing kayak means a manually propelled vessel that is recognized by national or international racing associations for use in competitive racing and one in which all occupants row, scull, or paddle, with the exception of a coxswain, if one is provided, and is not designed to carry and does not carry any equipment not solely for competitive racing.
Recreational vessel means any vessel being manufactured or operated primarily for pleasure, or leased, rented, or chartered to another for the latter's pleasure. It does not include a vessel engaged in the carriage of passengers-for-hire as defined in 46 CFR chapter I, subchapter C, or in other subchapters of this title.
Sailboard means a sail propelled vessel with no freeboard and equipped with a swivel mounted mast not secured to a hull by guys or stays.
State means a State or Territory of the United States of America, whether a State of the United States, American Samoa, the Commonwealth of the Northern Marianas Islands, the District of Columbia, Guam, Puerto Rico, or the United States Virgin Islands.
Use means operate, navigate, or employ.
Vessel includes every description of watercraft used or capable of being used as a means of transportation on the water.
33 C.F.R. §175.3