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NavSource Online:
Section Patrol Craft Photo Archive

Sea Tag (SP 505)


  • Built in 1917 by the Great Lakes Boatbuilding Corporation, Milwaukee, WI
  • Acquired by the Navy 9 July 1917
  • Commissioned 1 August 1917
  • Decommissioned 18 November 1918
  • Returned to her owner 7 March 1919
  • Fate unknown.


  • Displacement 13 t.
  • Length 51'
  • Beam 10' 3"
  • Draft 2' 5"
  • Speed 19 kts.
  • Complement 10
  • Armament: One 1-pounder
  • Propulsion: One 270hp 8-cylinder Van Blerck gasoline engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Sea Tag 133k Photographed in a boat shed, probably at the time of her completion in 1917
    U.S. Navy photo NH 102200
    Naval Historical Center
    Sea Tag 108k Photo from the May 1917 issue of The Rudder magazine Joe Radigan
    Photo added 26 December 2019

    View the Sea Tag (SP 505)
    DANFS history entry located on the Naval History and Heritage Command website
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    This page created by Joseph M. Radigan and maintained by David Wright
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