High Quality Content by WIKIPEDIA articles! USS Capelin (SS-289), a Balao-class submarine, was the only ship of the United States Navy to be named for the capelin, a small fish of the smelt family. Her keel was laid down by Portsmouth Navy Yard. She was launched on 20 January 1943 sponsored by Mrs. I.C. Bogart, and commissioned on 4 June 1943, Lieutenant Commander E.E. Marshall in command.