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


YMS-78 served the Navies of the United States, France and South Vietnam.

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 16 May 1941 as YMS-78 by the Stadium Yacht Basin, Cleveland, OH
  • Launched, 11 December 1941
  • Completed, 17 June 1942
  • Transferred to France 5 October 1944 as Belladone (D 318)
  • Sold to France, 21 March 1949
  • Struck from the Navy Register 28 April 1949
  • Reclassified D-18 and M-658
  • Decommissioned 11 February 1954 and transferred to South Vietnam as Bach Dang (HQ 113)
  • Scrapped in 1963.


  • 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
    YMS-78 71k Under construction with YMS-76 alongside. Historical Collections of the Great Lakes
    Belladone (D 318)
    YMS-78 99k c. 1948 Robert Hurst
    YMS-78 92k c. 1948 Robert Hurst
    Belladone (D 18)
    YMS-78 96k c. 1952 Robert Hurst
    Belladone (M 658)
    YMS-83 104k 11 February 1954
    Haiphong, Vietnam
    Outboard of Digitale (M 655), ex-YMS-83 preparing to lower her colors before turnover to South Vietnamese Navy
    Photo by Yves Chaput
    Georges Demichelis
    Bach Dang (HQ 113)
    YMS-83 86k 11 February 1954
    Haiphong, Vietnam
    Raising the South Vietnamese flag after turnover from France
    Photo by Yves Chaput
    Georges Demichelis
    YMS-78 50k c. 1960
    South Vietnamese Navy photo from Jane's Fighting Ships
    Robert Hurst

    There is no DANFS history available for YMS-78
    Additional Resources and Web Sites of Interest
    Association of Minemen
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back To The Auxiliary Motor Minesweeper (YMS) Photo Index

    Problems and site related matters, E-mail WebmasterWebmaster

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