RSA 450-A:1: Storage.

Any person who maintains a public boatyard, marine dealership or the like for storage and care of vessels, boats, or boat or vessel motors brought to his premises or placed in his care by or with the consent of the legal or equitable owner shall have a lien upon said vessel, boat, or boat or vessel motor so long as the same shall remain in his possession, for the proper charges due him for storage and care of the same or labor.