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NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-866

BYMS-66 served the Navies of Great Britain and Greece.

BYMS-1 Class Motor Minesweeper:

  • Laid down 20 April 1942 as BYMS-66 by Wheeler Shipbuilding Corp., Whitestone, NY
  • Launched 11 January 1943
  • Completed 8 February 1943, transferred to Great Britain and reclassified J-866
  • Reclasssified BYMS-2066
  • Returned to U.S. custody 12 August 1944; transferred to the State Department, Foreign Liquidation Commission; transferred to Greece and named Paralos (M 204) the same day
  • Transferred outright to Greece 22 July 1952
  • Struck from the Naval Register 8 August 1952
  • Struck from the Greek Navy registry in 1973
  • 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 tracks
  • 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
    BYMS-2066 58k Royal Hellenic Navy photo from the 1956/1957 edition of Jane's Fighting Ships Robert Hurst
    BYMS-2066 47k c. 1944

    There is no DANFS history available for BYMS-2066
    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 British Motor Minesweeper (BYMS) Photo Index

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    This page created and maintained by Joseph M. Radigan
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