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NavSource Online: Mine Warfare Vessel Photo Archive


MSC-221 was built for Denmark.

Omøsund call sign:
Oscar - Victor - Echo - Yankee

AMS-218 Class Motor Minesweeper:

  • Laid down 1 March 1955 as AMS-221 by the Bellingham Shipyards Co., Bellingham, WA
  • Reclassified as a Coastal Minesweeper, MSC-221, 7 February 1955
  • Launched 30 July 1955
  • Completed 23 May 1956, transferred to Denmark and named Omøsund (M 576)
  • Commissioned 21 June 1956
  • Decommissioned 1 March 1982
  • Fate unknown.


  • Displacement 375 t.
  • Length 144'
  • Beam 27'
  • Draft 8' 3"
  • Speed 14 kts.
  • Complement 39
  • Armament: Two 20mm mounts, replaced by one 40mm mount in 1965
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    MS-221 70k c. 1956
    Outboard of Grønsund (M 574), ex-MSC-256
    Royal Danish Navy photo
    Royal Danish Navy
    MS-221 191k c. 1966
    Royal Danish Navy photo from the 1967/1968 edition of Jane's Fighting Ships
    Robert Hurst
    MSO-481 458k NATO minesweepers underway during a STANAVFORCHAN [Standing Naval Force - Channel] Exercise. Ships are from top to bottom: the Federal German Navy Duren (M 1079); the Netherlands Navy Abcoude (M 180); the Norwegian Navy Alssund (M 572), ex-MSC-128; the Belgian Navy De Brouwer (M 904), ex-MSO-499; the Netherlands Navy Onbevreesd (A 855), ex-MSO-481; HMS Kirkliston
    (M 1157)
    ; the Omøsund; the Belgian Navy Koksijde (M 933) and the superstructure of HMS Bossington (M 1133)
    Royal Navy Museum photo from "Safeguarding the Nation: The Story of the Modern Royal Navy" by John Roberts

    There is no DANFS History currently available for MSC-221
    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 Motor Minesweeper (AMS) Photo Index Back to the Coastal Minesweeper (MSC) Photo Index

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    This page created and maintained by Joseph M. Radigan
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