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NavSource Online: Mine Warfare Vessel Photo Archive

MSO-501
ex-AM-501

MSO-501 was built for France.

AM-450 Class Minesweeper:

Laid down 17 August 1954 as AM-501 by Bellingham Shipyards Co., Bellingham, WA

Reclassified as an Ocean Minesweeper (Non-magnetic), MSO-501, 7 February 1955

Launched, 25 February 1955

Sponsored by Mrs. J. J. Greytak

Completed, 23 January 1956

Transferred to France as Origny (M 621), 14 February 1956

Converted to an Oceanographic Research Ship in 1961/62

Reclassified A-640 in 1974

Decommissioned 1 July 1982

Disposed of 14 January 1985

Fate unknown.

Specifications:

Displacement 750 t.

Length 171'

Beam 35'

Draft 11'

Speed 15.5 kts.

Armament: One 40mm 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
Origny (M 621)
	447k	4 December 1962 Genoa, Italy	Carlo Martinelli
Origny (A 640)
	62k	c. 1974 Combat Fleets of the World photo	Fabio Peña
	366k	24 April 1974 Toulon, France	Carlo Martinelli
	109k	20 June 1982 Barcelona, Spain. A few days before decommissioning.	Fabio Peña

There is no DANFS history available for MSO-501.

Additional Resources and Web Sites of Interest
102 Minesweepers (MSO) Oceangoing Minesweepers
Naval Minewarfare Association
Association of Minemen

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NavSource Online: Mine Warfare Vessel Photo Archive

MSO-501ex-AM-501

MSO-501
ex-AM-501