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 - Able - Baker - How

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 6 June 1941 by Colberg Boat Works and Stephen Brothers, Stockton, CA
  • Launched 16 February 1942
  • Completed 11 April 1942
  • Hastily completed 27 April 1942, without her sound gear and her decks newly caulked, she passed her degaussing runs with a reading of "four" and headed out the Gate for
    Long Beach, CA. At Long Beach she joined up with 11 other YMS' and set sail for the South Pacific on 16 July 1942. YMS-97 arrived in Noumea, New Caledonia, 20 August 1942 and began sweeping the harbor between Isle Nou and the Lighthouse with her sistership. During the next eight months of sweeping she managed to pick up one mine--ours--- while towing a target for the Army
  • After the war YMS-97 turned up in San Francisco Bay where she was used as a live-aboard by a University of California, Berkeley student in 1946
  • Struck from the Naval Register 7 February 1947
  • Transferred to the War Shipping Administration in February 1948
  • 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-97 257k San Francisco Bay, 1945-1946
    Courtesy of D. M. McPherson, 1974
    Naval History and Heritage Command photo NH 81376
    Mike Green
    YMS-97 37k c. 1946
    Anchored in the lee of Angel Island, San Francisco Bay
    Terry Holmes

    There is no DANFS history available for YMS-97
    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