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NavSource Online: Mine Warfare Vessel Photo Archive


Alencon call sign:
Foxtrot - Alpha - Sierra - Whiskey

AM-453 was built for France

AM-450 Class Minesweeper:

  • Laid down 1 November 1952 as AM-453 by the Bellingham Shipyards Co., Bellingham, WA
  • Launched, 11 April 1953
  • Completed, 23 June 1954
  • Transferred to France as Alencon (M 612), 16 July 1954
  • Reclassified by U.S. Navy as an Ocean Minesweeper, MSO-453, 7 February 1955
  • Struck from the Navy Register in 1983 and scrapped at Landevennec, France.


  • Displacement 750 t.
  • Length 171'
  • Beam 35'
  • Draft 10' 4"
  • Speed 15 kts.
  • Complement 39
  • Armament: One 40mm mount and two .50 cal. machine guns
  • Propulsion: Two 800shp General Motors diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    M-612 102k . Robert Hurst
    M-612 49k
    M-612 45k
    M-612 59k c. 1956
    Photo by M. Henri Le Masson from the 1956/1957 edition of Jane's Fighting Ships
    M-612 468k 27 August 1991
    Nantes, France
    Carlo Martinelli
    M-612 417k
    M-612 311k

    There is no DANFS history available for MSO-453
    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 Ocean Minesweeper (MSO) Photo Index

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    This page created and maintained by Joseph M. Radigan
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