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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Uncle - Roger - Easy

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 24 July 1941 by the Hubbard's South Coast Co., Newport Beach, CA
  • Launched 19 December 1941
  • Completed 24 July 1942
  • Grounded at Buckner Bay, Okinawa 9 October 1945 during Typhoon Louise
  • Refloated 24 October 1945 and decommissioned
  • Struck from the Naval Register 5 June 1946
  • Destroyed in September 1947.


  • 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 A. G. Dohrmann, USNR1945
    Courtesy Joe Radigan

    There is no DANFS history available for YMS-90
    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
    All pages copyright NavSource Naval History