36 mi. E of Akutan, easternmost of Krenitzin Islands., Fox Islands., Aleutian Islands.
Aleut name transcribed by Father Veniaminov (1840, v. 1, p. 202) as "O(strov) Ugamak," which, according to R. H. Geoghegan, may mean "ceremony island."
Tigalda Bay, Ugamak Bay, Welcome Bay,
Capes:Agaagilag-ukux, Angaakix, Qatunaaglux, Seal Cape, Unimguukux,
Channels:Hills:Islands:Aiktak Island, Botinski Island, Caribou Islands, Kaligagan Island, Pinnacle Rock, Round Island, Ugamak Island,
Rivers:Streams: