(a) A line drawn from the northernmost point of Angeles Point to latitude 48°21.1′ N. longitude 123°02.5′ W. (Hein Bank Lighted Bell Buoy); thence to latitude 48°25.5′ N. longitude 122°58.5′ W. (Salmon Bank Lighted Gong Buoy “3”); thence to Cattle Point Light on San Juan Island.

(b) A line drawn from Lime Kiln Light to Kellett Bluff Light on Henry Island; thence to Turn Point Light on Stuart Island; thence to Skipjack Island Light; thence to latitude 48°46.6′ N. longitude 122°53.4′ W. (Clements Reef Bouy “2”); thence to International Boundary Range B Front Light.