(a) A line drawn from the southernmost extremity of Cape Kumlium to the westernmost extremity of Nakchamik Island; thence to the easternmost extremity of Castle Cape at Chignik Bay.

(b) A line drawn from Second Priest Rock to Ulakta Head Light at Iliuliuk Bay entrance.

(c) A line drawn from Arch Rock to the northernmost extremity of Devilfish Point at Captains Bay.

(d) A line drawn from the easternmost extremity of Lagoon Point to the northwesternmost extremity of Cape Kutuzof at Port Moller.