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NavSource Online: Mine Warfare Vessel Photo Archive


MSO-502 was built for France.

AM-450 Class Minesweeper:

  • Laid down 15 October 1954 as AM-502 by the Bellingham Shipyards Co., Bellingham, WA
  • Reclassified as an Ocean Minesweeper (Non-magnetic), MSO-502, 7 February 1955
  • Launched 6 May 1955
  • Sponsored by Mrs. H. Schmita
  • Completed and delivered 14 March 1956
  • Transferred to France as Autun (M 622), 4 April 1956
  • Scrapped in 1985.


  • Displacement 750 t.
  • Length 171'
  • Beam 35'
  • Draft 11'
  • Speed 15.5 kts.
  • Armament: One 40-mm mount and two .50 cal. machine guns
  • Propulsion: Two 1,600shp General Motors diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    MSO-502 165k 4 April 1956
    Long Beach, CA
    U.S. Navy photo
    Robert M. Cieri
    MSO-502 46k Photo from the 1958/1959 edition of Jane's Fighting Ships Robert Hurst
    MSO-502 157k c. 1971
    Valletta, Malta
    Photo by A & J Pavia

    There is no DANFS history available for MSO-502
    Additional Resources and Websites of Interest
    102 Minesweepers (MSO) Oceangoing Minesweepers Naval Minewarfare Association Association of Minemen

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    This page created and maintained by Joseph M. Radigan
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