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NavSource Online: Mine Warfare Vessel Photo Archive

AM / MSO-485


AM-485 was built for the Netherlands.


AM-480 Class Fleet Minesweeper: Laid down, 17 February 1952 as AM-485 by the Peterson Builders Inc., Sturgeon Bay, WI; Launched, 22 August 1953; Completed, 22 November 1954 and transferred to the Netherlands as Onverdroten
(M 889)
; Reclassified by U. S. Navy as an Ocean Minesweeper MSO-485, 7 February 1955; Struck in 1982.

Specifications: Displacement 750 t.; Length 171'; Beam 35'; Draft 10' 4"; Speed 15 kts; Complement 39; Armament, one 40-mm and two .50 cal. machine guns; Propulsion General Motors 1,600shp diesel enginess, two shafts.
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AM-484 55k Minesweeper hulls AM-483, 484, 485 for the Netherlands in the background. In the foreground is the last American-made side-wheeler still afloat in the U.S. and used as a floating warehouse, Restored and now serves as a museum in Sandusky, Ohio.
Photo courtesy Peterson Builders.
Mercuur Museum Website
Onverdroten 54k Royal Dutch Navy Photo Mercuur Museum Website
Onverdroten 123k At Oostende, Norway Mercuur Museum Website

There is no DANFS history available for AM-485.
Crew Contact And Reunion Information
U.S.Navy Memorial Foundation
Fleet Reserve Association

Additional Resources and Web Sites of Interest
Naval Minewarfare Association
Association of Minemen

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This page created and maintained by Joseph M. Radigan
© 2003 Joseph M. Radigan © 1996 - 2003 NavSource Naval History. All Rights Reserved.