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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Xray - Dog - William

Sunk 9 October 1945

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 19 June 1942 by the San Diego Marine Construction Co., San Diego, CA
  • Launched 30 September 1942
  • Completed 23 June 1943
  • Sunk as a result of typhoon Louise off Okinawa 9 October 1945
  • Struck from the Naval Register 3 January 1946 and destroyed


  • 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 800bhp 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-146 183k Tommy Trampp
    YMS-146 47k 28 May 1944
    U.S. Navy photo
    Original photo: Hyperwar U.S. Navy in World War II
    Replacement photo: Robert Hurst
    YMS-146 123k 9 October 1945
    PC-590 aground on the left with LSM-143 and YMS-146 in the background during Typhoon Louise
    Photo by David Sweeten USS Mona Island (ARG 9) contributed by Henry Carr
    David Sweeten Family

    Commanding Officers
    01LT D. L. Talmage, USNR1945
    02LT C. H. Barber, USNR1945
    Courtesy Joe Radigan

    There is no DANFS history available for YMS-146
    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 is created by Gary P. Priolo and maintained by Joe Radigan
    All pages copyright NavSource Naval History