High Quality Content by WIKIPEDIA articles! USS F-2 (SS-21), an F-class submarine, was named Barracuda when her keel was laid down by Union Iron Works of San Francisco, California, but was renamed on 17 November 1911. She was launched on 19 March 1912 sponsored by Miss A. R. Rolph, daughter of James Rolph, the mayor of San Francisco, and commissioned on 25 June 1912 with Lieutenant (junior grade) F. L. Chew in command.