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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Charlie - Jig - Able

YMS-220 served the Navies of the United States and South Korea

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 25 November 1942 by the J. M. Martinac Shipbuilding Co., Tacoma, WA
  • Launched 6 March 1943
  • Completed 30 August 1943
  • Struck from the Naval Register 19 June 1946
  • Transferred to the State Department, Foreign Liquidation Commission in April 1947
  • Transferred to South Korea 6 August 1947
  • Commissioned ROKS Gapyeong (YMS 509), 11 November 1947
  • Struck a mine in September 1950 and sank.


  • 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
    Sprig 128k Nested along with Sprig (AM 384), YMS-442, YMS-419, and YMS-468
    From the collection of Joseph Richard who served in 1945 in Sprig
    Joe Richard, Jr.

    There is no DANFS History currently available for YMS-220
    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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