Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-846

BYMS-46 served the Navies of Great Britain and The Netherlands

Westerscheide call sign:
Papa - Alpha - November - Juliet

BYMS-1 Class Motor Minesweeper:

  • Laid down 10 April 1942 as BYMS-46 by the Gibbs Corp., Jacksonville, FL
  • Launched 19 July 1942
  • Completed 19 January 1943
  • Transferred to Great Britain and reclassified J-846, 3 February 1943
  • Reclassified BYMS-2046
  • Returned to U.S. custody 11 April 1946, loaned to The Netherlands and named Westerscheide (MV 39)
  • Reclassified M-839
  • Returned to U.S. custody 27 July 1947 (on paper only), sold to The Netherlands and reclassified A-873
  • Struck from the Naval Register in 1957
  • Transferred to Amsterdam for technical education
  • 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
    HMS J-846
    BYMS-2046 76k Photo FL 7340 from the Collections of the Imperial War Museum Robert Hurst
    HNLMS Westerscheide (MV 39)
    BYMS-2046 72k . Arie van Mazijk
    YMS-155 76k Steaming in formation, left to right: Texelstroom (MV 37), Vliestroom (MV 38) and Westerschelde
    YMS-210 56k Moored inboard of Borndiep (MV 34) and Texelstroom (MV 37)
    YMS-155 98k Den Helder, Holland
    HNLMS Westerscheide (M 839)
    BYMS-2046 52k . Arie van Mazijk
    HNLMS Westerscheide (A 873)
    BYMS-2046 61k . Arie van Mazijk

    There is no DANFS history available for BYMS-46
    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

    Comments, Suggestions, E-mail Webmaster

    This page created and maintained by Joseph M. Radigan
    All pages copyright NavSource Naval History