In the middle of Little Tanaga Strait, between Little Tanaga and Kagalaska Is., Middle Aleutians.
Aleut name published by Captain Tebenkov (1852, map 28), Imperial Russian Navy (IRN), as "O(strov) Silakh," or "Silakh Island."
Aankuuga, Aanudaax, Adak Bight, Aduutuqix, Agamaxchizalix, Azamis Cove, Blind Cove, Cabin Cove, Campers Cove, Chalux, Chisak Bay, Chuqax, Crater Cove, Haanugix, Hanimisax, Hiixsax, Kimlaliilux, Laska Cove, Liisis Tatuu, Lower Arm, Naagix Adimtusix, Nahmagix, Piper Cove, Qagaagix Chalux, Quail Bay, Round Cove, Saamlus, Sand Bay, Scripps Bay, Sitkin Sound, Tagugilgim-qakuudguu, Tana Bight, Ulgusix, Upper Arm Cabin Cove, Uuhmugzux,
Aalux, Agony Point, Black Point, Blind Point, Campers Point, Cape Chakik, Cape Chisak, Cape Kiugilak, Cape Lises, Cape Umak, Cemetery Point, Elbow Point, Galas Point, Ixusis, Kaga Point, Knaxchiing, Narrows Point, Oglala Point, Passage Point, Qatxayas Yaaga, Ragged Point, Sharp Cape, Tana Point, Tanagam Amaga, Zaliva Point,
Amgasis, Asuksak Island, Atangax, Aziak Island, Box Island, Chaika Rock, Chisak Island, Kagalaska Island, Kanu Island, Little Tanaga Island, Rip Rock, Silak Island, Tanaklak Island, Tanax Angunax, Umak Island,