12 mi. E of Stepovak Bay, Aleutian Range. 4.5 miles long.
Named by Lieutenant Woronkofski in 1837; published as "O(strov) Sv(yatoy) Iakova," or "St. Jacob Island," on Russian Hydrographic Dept. Chart 1379 (1847). "Jacob Island" was shown in 1888 on U.S. Coast and Geodetic Survey (USC&GS) Chart 806.
Humpback Bay, Ivanof Bay, Kupreanof Harbor,
Capes:Alexander Point, Coal Point, Fox Cape, Noon Point, Three Star Point,
Islands:Egg Island, Jacob Island, James Island, Leader Island, Paul Island, Road Island,
Mountains:Rivers:Streams:Valleys:Cities: