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NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-842

BYMS-42 served the Navies of Great Britain and Italy.

BYMS-1 Class Motor Minesweeper:

  • Laid down 15 October 1942 as BYMS-42 by the Barbour Boat Works, New Bern, NC
  • Launched 26 June 1943
  • Completed 11 November 1943
  • Transferred to Great Britain 13 November 1943 and reclassified HMS J-842
  • Reclassified HMS BYMS-2042
  • Returned to U.S. custody 3 December 1945
  • Struck from the Naval Register 5 December 1945
  • Transferred to the State Department, Foreign Liquidation Commission in November 1947; sold to Italy and named Gladiolo (DR 417)
  • Reclassified M-5416
  • Struck from the Italian registry 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 o thumbnail
    for full size image
    Size Image Description Source
    BYMS-2042 206 c. 1965
    Italian Navy photo from Jane's Fighting Ships
    Robert Hurst

    There is no DANFS history available for BYMS-42
    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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