USS F-4 (SS-23)
 USS F-4 (SS-23) was a F-class submarine. Her keel was laid down by the Moran Brothers of Seattle Washington. She was originally named Skate making her the first ship of the United States Navy named for the skate. She was renamed F-4 on 17 November 1911. She was launched on 6 January 1912 sponsored by Mrs. M.F. Backus; and commissioned on 3 May 1913 with Lieutenant (junior grade) K.H. Donavin in command.