R.I. Gen. Laws § 46-4-5
The jurisdiction of the city of East Providence shall include all of the public waters easterly of the easterly sides of the ship channels in the Seekonk River, Providence River and Harbor, and Narragansett Bay from the Pawtucket-East Providence city line southerly to the point of intersection of those ship channel sides with a straight line drawn from Gaspee Point on the west shore to Nayatt Point on the east shore; and all of the public waters on the northerly side of a line running sixty-five degrees (65 degrees) true from the intersection formed by the straight line drawn from Gaspee Point to Nayatt Point and the ship channel side to the point of intersection with the East Providence-Barrington boundary line; and all of the public waters, westerly and northerly, in Bullock Cove, of the East Providence-Barrington boundary line to the point of in intersection of the boundary line and the mean high water line.
R.I. Gen. Laws § 46-4-5