USS H-1 (SS-28), the lead ship of her class of submarine of the United States Navy, was originally named Seawolf, making her the first ship of the U.S. Navy to be named for the seawolf. Seawolf was laid down by the Union Iron Works of San Francisco, California. She was renamed on 17 November 1911, launched on 6 May 1913 sponsored by Miss Lesley Jean Makins, and commissioned at Mare Island Navy Yard on 1 December 1913, Lieutenant Henry M. Jensen in command.