(a) A line drawn from Shinnecock East Breakwater Light to Shinnecock West Breakwater Light.
(b) A line drawn from Moriches Inlet East Breakwater Light to Moriches Inlet West Breakwater Light.
(c) A line drawn from Fire Island Inlet Breakwater Light 348 true to the southernmost extremity of the spit of land at the western end of Oak Beach.
(d) A line drawn from Jones Inlet Light 322 true across the southwest tangent of the island on the north side of Jones Inlet to the shoreline.