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NavSource Online:
Section Patrol Craft Photo Archive

Thetis (SP 391)

Call sign:
George - Sail - Mike - Have

Patrol Yacht:

  • The second Thetis was built in 1901 by George Lawley and Sons, Neponset, MA
  • Acquired by the Navy 23 June 1917 and commissioned the same day
  • Decommissioned and struck from the Navy list 31 March 1919
  • Sold 19 July 1920
  • Fate unknown.


  • Displacement 98 t.
  • Length 128'
  • Beam 16' 4"
  • Draft 6' 6"
  • Speed 12 kts.
  • Complement 16
  • Armament: Two 3-pounders and two machine guns
  • Propulsion: One Almy boiler, one 525hp vertical triple expansion steam engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Steam Yacht Thetis
    Thetis 90k Photographed prior to World War I
    U.S. Navy photo NH 102260
    Naval Historical Center
    USS Thetis (SP 391)
    Thetis 125k Photographed by one of her Quartermasters, while in port during her World War I era Navy service
    U.S. Navy photo NH 42432
    Naval Historical Center
    Satilla 88k USS Satilla (SP 687) or Thetis in port, during World war I. If this is Satilla then the photograph was taken circa 1917, before the extension to the deckhouse to occupy more space forward of the smokestack
    Donation of Dr. Mark Kulikowski, 2008
    Naval Historical Center photo NH 105484
    Robert Hurst

    View the Thetis (SP 391)
    DANFS history entry located on the Naval History and Heritage Command website
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