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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Able - Zebra - Yoke

Sunk 1 September 1944

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 28 June 1941 by the Greenport Basin and Construction Co., Long Island, NY
  • Launched 25 November 1941
  • Completed 18 April 1942
  • Struck a mine 1 September 1944 and sank, at 4306'N., 0554'E., off Toulon, France
  • Struck from the Naval Register 16 September 1944.


  • 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-21 150k Original photo: Naval History and Heritage Command photo
    Replacement photo: Underway off the Norfolk Navy Yard on 2 June 1942
    Naval History and Heritage Command photo NH 91616
    Original photo: Joe Radigan
    Replacement photo: Mike Green

    There is no DANFS history available for YMS-21
    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 & Michael Mohl

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