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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
    YMS-56 139k c. October 1945
    Aground at Okinawa
    David Wright

    Commanding Officers
    01LT A. G. Dohrmann, USNR1945
    Courtesy Joe Radigan

    There is no DANFS history available for YMS-90
    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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