on S coast of Tigalda I.; Aleutian Islands. 1.7 miles wide.
Historynamed for Derbin Strait and shown on recent U.S. Coast and Geodetic Survey (USC&GS) charts.
Avatanak Bight, Derbin Bay, Kelp Bay, Tigalda Bay, Welcome Bay,
Capes:Agaagilag-ukux, Angaakix, Avatanak Point, Qatunaaglux, Unimguukux,
Channels:Islands:Avatanak Island, Botinski Island, Derbin Island, Tanginak Island, Tigalda Island,