(1) “Boat dock” means a man-made structure that protrudes into a body of water for the purpose of mooring a boat or for other water-related recreation, including boat liveries, and that is connected to an electrical power source in any manner; provided, that “boat dock” does not include structures that are privately owned and used exclusively by the owner or the owner's guests for non-commercial purposes;

(2) “Boat dock or marina operator” means any person, whether owner or not, supervising or responsible for operating, maintaining, or repairing a boat dock or marina that is subject to this part;

(3) “Marina” means a dock, including a boat dock or basin providing moorings for watercraft and boat houses and offering supply, repair, or other services, including electric power supply, for remuneration; provided, that “marina” does not include structures that are privately owned and used exclusively by the owner or the owner's guests for non-commercial purposes;

(4) “Person” means an individual, partnership, firm, corporation, association, or other legal entity, however organized;

(5) “Vessel” means any watercraft, other than a seaplane on the water, designed and used primarily for navigation or transportation on the water; and

(6) “Watercraft” means a vessel that is propelled by machinery, whether or not such machinery is the principal source of propulsion; provided, that it does not include a vessel owned or operated by the United States government, or this state or any department or agency of this state, or any political subdivision of this state.