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NavSource Online: Mine Warfare Vessel Photo Archive


YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 30 May 1941 by the Gibbs Gas Engine Co., Jacksonville, FL
  • Launched 6 December 1941
  • Completed 18 March 1942
  • Assigned to the Caribbean Sea Frontier
  • Picked up eight survivors 16 December 1943 from the U.S. tanker McDowell torpeoded by the German submarine U-516 en route from New York to Aruba, Netherlands West Indies
  • Struck from the Naval Register 17 April 1946
  • Transferred to the War Shipping Administration in February 1948
  • Fate unknown.


  • Displacement 270 t.
  • Length 136'
  • Beam 24' 6"
  • Draft 8'
  • Speed 15 kts.
  • Complement 32
  • Armament: One 3"/50 dual purpose gun mount, two 20mm mounts, and two depth charge projectors
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    YMS-56 280k Artist's rendition of YMS-56 and YMS-90
    Cover of the October 1942 edition of Motor Boating magazine
    Tom Nye

    Commanding Officers
    01LT Nelson W. Millard, USNR1944
    Courtesy Joe Radigan

    There is no DANFS history available for YMS-56
    Additional Resources and Web Sites of Interest
    Naval Minewarfare Association
    Association of Minemen
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back to the Auxiliary Motor Minesweeper (YMS) Photo Index

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    This page created and maintained by Joseph M. Radigan
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