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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Queen - Victor - Oboe


YMS-463 served the Navies of the United States and South Korea.

YMS-1 Auxiliary Motor Minesweeper:

  • Laid down 6 May 1943 as a Patrol Craft Sweeper, PCS-1428 by the C. Hiltebrant Drydock Co., Kingston, NY
  • Reclassified as an Auxiliary Motor Minesweeper, YMS-463, 27 September 1943
  • Launched 21 March 1944
  • Completed 15 July 1944
  • Transferred to South Korea 10 May 1947 and named Kang Nung (YMS 507)
  • Struck from the Naval Register 23 December 1947
  • 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-463 166k 2 September 1944
    Photo received from the New York Superintendent of Shipbuilding
    National Archives photo 19-N-70355
    Naval History and Heritage Command

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