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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Peter - Jig - Baker

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 21 April 1943 by Henry C. Grebe and Co., Chicago, IL
  • Launched 16 September 1943
  • Completed 8 December 1943
  • Decommissioned 27 June 1946 at Seattle, WA
  • Struck from the Naval Register 31 July 1946
  • Transferred to the War Shipping Administration 19 February 1947 and sold
  • Fate unknown.


  • 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-407 194k San Francisco Bay, c. 1945-1946
    Courtesy of Donald M. McPherson, 1976
    Naval History and Heritage Command photo NH 79710
    Mike Green

    Commanding Officers
    01LT F. S. Osborne, USNR1945
    Courtesy Joe Radigan

    There is no DANFS History currently available for YMS-407
    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
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