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NavSource Online: Mine Warfare Vessel Photo Archive


Courtesy of Arie van Mazijk

Call sign:
Papa - Alpha - Sierra - Uniform

AM-482 was built for the Netherlands

AM-480 Class Fleet Minesweeper:

  • Laid down 11 April 1952 as AM-482 by the Astoria Marine Construction Co., Astoria, OR
  • Launched 6 March 1954
  • Sponsored by Mrs. W. J. Peterson
  • Completed 18 January 1955
  • Transferred to the Netherlands 31 January 1955 and named Onvervaard (M 888)
  • Reclassified by U. S. Navy as an Ocean Minesweeper, MSO-482, 7 February 1955
  • Reclassified A-858 in August 1965
  • Sold for scrap 14 November 1984 to Deans Marine Ltd. of Sheerness, United Kingdom.


  • 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: General Motors 1,600shp diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Onvervaard (M 888)
    MSO-482 131k c. 1955
    Flying the Dutch flag but still wearing her U.S. Navy hull number
    Arie van Mazijk
    MSO-482 47k 1 February 1956
    Den Helder, Holland
    Moored forward of Onverdroten (M 889), ex-MSO-485
    MSO-482 57k 1 February 1956
    Den Helder, Holland
    MSO-482 232k . Pieter Bakels
    Onvervaard (A 858)
    MSO-482 72k . Arie van Mazijk
    MSO-482 67k
    MSO-482 72k
    MSO-482 52k Photographed from a Dutch P2V Neptune anti-submarine patrol plane
    MSO-482 99k c. 1966 Robert Hurst
    MSO-482 62k Original photo: c. 1969
    Royal Netherlands Navy photo from the 1969/1970 edition of Jane's Fighting Ships
    Original photo: Robert Hurst
    Replacement photo: Arie van Mazijk
    MSO-482 48k Under tow to Deans Marine, Ltd. for scrapping Arie van Mazijk
    MSO-482 52k
    MSO-482 83k
    MSO-482 61k

    There is no DANFS history available for MSO-482
    Additional Resources and Web Sites of Interest
    102 Minesweepers (MSO) Oceangoing Minesweepers 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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