Section 80.520 - Cape Hatteras, NC to Cape Lookout, NC(a) A line drawn from Hatteras Inlet Lookout Tower at latitude 35°11.85' N., longitude 75°43.9' W. 255° true to the eastern end of Ocracoke Island.(b) A line drawn from the westernmost extremity of Ocracoke Island at latitude 35°04.0' N., longitude 76°00.8' W. to the northeasternmost extremity of Portsmouth Island at latitude 35°03.7' N., longitude 76°02.3' 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