(a) A line drawn from the westernmost extremity of Harbor Point to the southernmost extremity of LaChaussee Spit at Lituya Bay.
(b) A line drawn from Ocean Cape Light to latitude 5931.9 N. longitude 13957.1 W. (Yakutat Bay Entrance Lighted Whistle Buoy ``2''); thence to the southeasternmost extremity of Point Manby.
(c) A line drawn from the northernmost extremity of Point Riou to the easternmost extremity of Icy Cape.