USS N-7 (SS-59) was an N-class coastal defense submarine of the United States Navy. Her keel was laid down on 20 April 1915 by Lake Torpedo Boat Company in Bridgeport, Connecticut. N-boats built by Lake had slightly different specifications from the ones built by Seattle Construction and Drydock and are sometimes considered a separate class. She was launched on 19 May 1917, sponsored by Mrs Frank Miller, and commissioned on 15 June 1918, with Lieutenant Walter S. Kass in command.