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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Charlie - Uncle - Peter


YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 5 June 1943 as PCS-1398 by the South Coast Co., Newport Beach, CA
  • Reclassified as an Auxiliary Motor Minesweeper, YMS-449, 27 September 1943
  • Launched 29 February 1944
  • Completed and commissioned USS YMS-449, 7 July 1944
  • Struck from the Naval Register 19 July 1946
  • Transferred to the War Shipping Administration 6 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-449 54k 15 July 1944
    U.S. Navy photo
    U.S. Navy in World War II
    YMS-449 155k San Francisco Bay, circa 1945
    Courtesy of Donald McPherson, 1976
    Naval History and Heritage Command photo NH 84990
    Mike Green

    There is no DANFS history available for YMS-449
    Additional Resources and Web Sites of Interest
    Naval Minewarfare Association
    Association of Minemen
    Back To The Main Photo Index Back To the Patrol Craft/Gunboat/Submarine Chaser Ship Type Index Back to the Patrol Craft Sweeper (PCS) 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 by Gary P. Priolo and was maintained by Joseph M. Radigan (of blessed memory) & Michael Mohl. All Pages 1996 - 2023, NavSource History, All rights reserved.