between Etolin and Onslow Is., 42 mi. NE of craig, Alex. Arch. 3 miles wide.
Named in 1886, by Lieutenant Commander A. S. Snow, U.S. Navy (USN), for Ensign Theodore Gibbs Dewey, U.S. Navy (USN), a member of his party.
Back Chuck, Burnett Inlet, Cooney Cove, Dewey Anchorage, Forss Cove, Jadski Cove, Little Ratz Harbor, McHenry Anchorage, McHenry Inlet, Menefee Inlet, Meyers Chuck, Mosman Inlet, Ratz Harbor, Rocky Bay, Union Bay,
Avon Island, Brownson Island, Carlton Island, Center Island, Deadman Island, Double Island, Eagle Island, Entrance Island, Etolin Island, Fawn Island, Mabel Island, McHenry Islet, Meyers Island, Misery Island, Mosman Island, North Burnett Island, Onslow Island, Petersen Islands, Quartz Rock, Range Island, South Burnett Island, Split Island, Stanhope Island, Stone Islands,