Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - George - Mike - Queen

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 27 June 1942 by the Harbor Boat Building Co., Terminal Island, CA
  • Launched 29 May 1943
  • Completed 14 September 1943
  • Commissioned in October 1943
  • Participated in the following invasions:
    Biak, New Guinea - 27 May 1944
    Moratai, Netherlands East Indies - 15 September 1944, and
    Leyte, Philippines - 25 October 1944
  • Struck from the Naval Register 10 June 1947
  • Transferred to the State Department, Foreign Liquidation Commission 21 October 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-393 162k . Robert Cox
    YMS-393 92k c. June 1945
    Mariveles Harbor, Luzon, Philippines
    The ship was undertaking hydrographic surveys, sweeping anchorages, fixing navigational beacons, along with charting and buoying wrecks of ports and harbors in the northern Philippines
    Australian War Memorial, by Betty, John Lt. RANVR, Photo No. P02305.049
    Mike Green

    There is no DANFS History currently available for YMS-393
    Oral History of the YMS-393
    by Roger C. "Smitty" Smith
    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

    Comments, Suggestions, E-mail Webmaster

    This page created and maintained by Joseph M. Radigan
    All pages copyright NavSource Naval History