U.S.-flag vessel means a vessel of the United States or belonging to the United States, including any vessel registered or having national status under the laws of the United States.
Commercial vessel means any vessel not owned and operated by the United States military or the United States Coast Guard.
public vessel ’ means a vessel owned or bareboat chartered and operated by the United States, by a State or political subdivision thereof, or by a foreign nation, except when such vessel is engaged in commerce;
Foreign flag vessel means any vessel that is not a U.S.-flag vessel.
Delivery vessel means tank trucks or trailers equipped with a storage tank and used for the transport of gasoline from sources of supply to stationary tanks of gasoline dispensing facilities.