R.I. Gen. Laws § 46-9-2: Vessels required to employ state licensed pilot — “Vessel” defined.

(a) Every foreign vessel, regardless of gross tonnage or draft, and every American vessel under register, regardless of gross tonnage or draft, and every other vessel not exempted by § 46-9-3, or the laws of the United States, entering or departing from any port of the state or traversing the waters of the state north of a line drawn from Point Judith to Sakonnet Point, shall take and employ a pilot licensed under this chapter and shall be subject to the provisions of this chapter; and the vessel, its master, owner, agent, or consignee shall be liable for any pay pilotage rates in accordance with the pilotage rates established by the pilotage commission or which may be established under the provisions of this chapter; and the vessels shall be subject to regulations established by the pilotage commission, which commission is established under § 46-9-5.

(b) Unless otherwise provided, as used in this chapter, the word “vessel” means every description of watercraft or other artificial contraption used or capable of being used as a means of transportation on water and measuring one thousand (1,000) gross tons or more, and capable of loading to a draft of twelve feet (12′) or more, and every foreign ship, boat, barge, vessel, and watercraft, regardless of gross tonnage or draft, and every American ship, boat, barge, vessel, and watercraft under register, regardless of gross tonnage or draft.

(c) Notwithstanding any of the above provisions, any vessel carrying or towing a barge or similar conveyance carrying more than one thousand (1,000) gross tons of any oil, petroleum, petroleum distillate, or any by-product thereof, shall be defined as a vessel and shall be subject to the provisions of this chapter.