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NavSource Online: Mine Warfare Vessel Photo Archive

HM BYMS-2157
ex-HM J-957

YMS-157 was built for Great Britain

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 18 July 1942 as YMS-157 by the Burger Boat Co., Manitowoc, WI
  • Launched 1 December 1942
  • Completed 15 April 1943
  • Transferred to Great Britain 28 April 1943 and reclassified HM J-957
  • Reclassified BYMS-2157
  • Returned to U.S. Navy custody in 1946
  • Struck from the Naval Register 28 August 1947
  • Transferred to the State Department, Foreign Liquidation Commission in April 1948
  • 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
    BYMS-2157 184k Mark Baxter
    BYMS-2157 51k Moored outboard of BYMS-2079 Tommy Trampp
    Photo added 9 June 2022
    BYMS-2157 50k

    There is no DANFS history available for BYMS-2157
    Commanding Officers
    01T/LT John Richard Grundy, RNR29 April 1943 - 9 October 1943
    02T/LT Desmond McGrath, RNVR9 October 1943 - early 1946
    Courtesy Joe Radigan

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    This page created and maintained by Joseph M. Radigan & Michael Mohl

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