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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Queen - Nan - Xray

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 10 February 1943 by the Bellingham Marine Railway and Boat Building Co., Bellingham, WA
  • Launched 1 May 1943
  • Completed 11 November 1943
  • Present in Tokyo Bay during Japanese surrender ceremony in September 1945
  • Struck from the Naval Register 14 March 1947
  • Transferred to the War Shipping Administration 17 July 1947 and sold
  • Registered in 1949 to the Pure Oil Co. of Port Arthur, TX as the miscellaneous vessel K. A. Covell out of Port Arthur
  • Fate unknown.


  • Displacement 270 t.
    1949 - 254 t.
  • Length 136'
    1949 - 1266t.3'
  • Beam 24' 6"
  • Draft 8'
    1949 - 11.3'
  • Speed 15 kts.
  • Complement 32
    1949 - Four
  • 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-343 127 Coming alongside USS Putnam (DD 757) during mainland Japan occupation activities September - November 1945
    Photo from the George Hansen Putnam photos set
    Eric Hansen and John Chiquoine

    Commanding Officers
    01LTJG C. V. N. Westcott, USNR1945
    Courtesy Joe Radigan

    There is no DANFS history available for YMS-343
    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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