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NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-840

BYMS-2040 served the Royal Navy and Greek Customs

BYMS-1 Class Motor Minesweeper

  • Laid down 7 September 1942 as BYMS-40 by the Barbour Boat Works, New Bern, NC
  • Launched 7 December 1942
  • Completed 12 August 1943
  • Transferred to Great Britain and HMS J-840, 14 August 1943
  • Renamed HMS BYMS-2040
  • Transferred to the State Department, Foreign Liquidation Commission in August 1947
  • Returned to U.S. custody 1 September 1947 and sold to Greek Customs as a contraband chaser
  • 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 diesel engines, Snow and Knobstedt single reduction gear, two shafts.
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    No image of BYMS-2040 is available at this time

    There is no DANFS history available for BYMS-2040.
    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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