(a) A line drawn from Hatteras Inlet Lookout Tower at latitude 35[deg]11.85[min] N., longitude 75[deg]43.9[min] W. 255[deg] true to the eastern end of Ocracoke Island.
(b) A line drawn from the westernmost extremity of Ocracoke Island at latitude 35[deg]04.0[min] N., longitude 76[deg]00.8[min] W. to the northeasternmost extremity of Portsmouth Island at latitude 35[deg]03.7[min] N., longitude 76[deg]02.3[min] W.
(c) A line drawn across Drum Inlet parallel with the general trend of the highwater shoreline. [USCG-2013-0397, 78 FR 39171, July 1, 2013]