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Section Patrol Craft Photo Archive


YP-633 call sign:
Nan - Tare - Pup - Love

ex-Constance II (SP 633)


  • Built in 1914 by the Holmes Marine Construction Co., Mystic, CT
  • Acquired by the Navy 6 July 1917 from Joseph Gahm of Boston, MA
  • Commissioned USS Constance II (SP 633), 30 July 1917
  • Reclassified as a District Patrol Craft, YP-633 in July 1920
  • Struck from the list of district craft 5 September 1922, Reclassified as a small boat and assigned as a launch at the Boston Navy Yard
  • Fate unknown.


  • Length 41'
  • Beam 9' 9"
  • Draft 3'
  • Speed 12 kts.
  • Armament: One 1-pounder and one machine gun
  • Propulsion: One 4-cylinder 45 hp Holmes gasoline engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Constance II 89k In port prior to her World War I era Navy service
    U.S. Navy photo NH 102834
    Naval Historical Center

    View the Constance II (SP 633)
    DANFS history entry located on the Naval History and Heritage Command website
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