between Ugamak and Kaligagan Islands., in Krenitzin Islands., Aleutian Islands.
Aleut name transcribed by Father Veniaminov (1840, v. 1, p. 16) as "Ugamakskey," and probably is derived from the name of the island.
Tigalda Bay, Ugamak Bay, Welcome Bay,
Capes:Agaagilag-ukux, Angaakix, Qatunaaglux, Unimguukux,
Channels:Islands:Aiktak Island, Botinski Island, Kaligagan Island, Round Island, Tigalda Island, Ugamak Island,