Description
10.5 mi. N of Baranof, on NE coast of Baranof I., Alex. Arch. 0.3 mile wide.
History
Named in 1895 by Lieutenant Commander E. K. Moore, U.S. Navy (USN), for the steam launch Cosmos of the U.S. Coast and Geodetic Survey (USC&GS) steamer Patterson, which aided in the exploration of this region.