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NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-986

BYMS-2186 served the Navies of Great Britain and Greece.

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down as YMS-186, 12 May 1942 by Greenport Basin and Construction Co., Long Island, NY
  • Launched 22 August 1942
  • Completed 27 February 1943 and transferred to the Royal Navy as HMS J-986
  • Renamed HMS BYMS-2186
  • Returned to U.S. Navy custody 15 December 1943, transferred to Greece and named Leros (M 210)
  • Given outright to Greece 22 July 1952
  • Struck from the Naval Register 8 September 1952
  • Struck from the Greek Navy list in 1966
  • 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
    HMS BYMS-2186
    YMS-186 41k c. August 1943 .
    Leros (M 210)
    YMS-186 112k c. 1963
    Royal Hellenic Navy photo from the 1964/1965 edition of "Jane's Fighting Ships"
    Robert Hurst

    Commanding Officers
    01T/Lt. John Richard Grundy, RNRJuly 1942 - Mid 1943
    02T/Lt. Harold Lipscombe Prestage, RNVRDecember 1943 - ?

    There is no DANFS history available for YMS-186
    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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