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NavSource Online: Mine Warfare Vessel Photo Archive
All patches courtesy of Mike Smolinski

Constant (MSO 427)
ex-AM-427



Call sign:
November - Delta - Alpha - Delta
Aggressive Class Minesweeper: Laid down, 16 August 1951 at Fulton Shipyard, Antioch, CA; Launched, 14 February 1953; Commissioned USS Constant (AM-427), 8 September 1954; Reclassified as an Ocean Minesweeper, MSO-427, 7 February 1955; Decommissioned, 30 September 1992; Struck from the Navy Register 9 March 1994; Sold for scrap to Crowley Marine, removal date 29 September 1999; Scrapped, 1 April 2001.

Specifications: Displacement 630 t.(lt), 755 t.(fl); Length 172'; Beam 35'; Draft 10'; Speed 14 kts; Complement 80; Armament, as built, one 40mm gun mount, two .50 cal machine guns, final configuration, bow gun replaced by one twin 20mm gun mount, two .50 cal. machine guns remain; Propulsion, four Packard ID1700 diesel engines, two shafts, two controllable pitch propellers.

Click on thumbnail
for full size image		 Size Image Description Source
Constant 158k - 102 Minesweepers
Web Site
Dick Lewis
Constant 86k U.S. Navy photo David Buell
Constant 277k c. October 1957
Entering the San Francisco Golden Gate.
Photo by Allied Photographers of San Francisco, CA.		 Robert M. Cieri
Constant 171k c. 1960. Constant leading sister ships into port after mine exercises in
the Pacific.		 DANFS
Constant 91k Campbell Shipyard, San Diego between September 1987 and January 1988. Chris Ronan
Constant 103k Campbell Shipyard, San Diego between September 1987 and January 1988. Chris Ronan
Constant 86k c. February 1990 Scott Van Aken
View the Constant (MSO-427)
DANFS History entry located on the Haze Gray & Underway Web Site.
Crew Contact And Reunion Information
Navy MSO Association Email Addresses
Additional Resources and Web Sites of Interest
102 Minesweepers (MSO) Oceangoing Minesweepers
Naval Minewarfare Association
Association of Minemen
Navy MSO Association
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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