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NavSource Online: Service Ship Photo Archive

AO-77 / T-AOT-77 Cossatot


Suamico Class Fleet Oiler: Laid down, 28 February 1943, as Fort Necessity, a Maritime Commission type (T2-SE-A1) tanker hull under Maritime Commission contract, (MC hull 307) at Sun Shipbuilding and Dry Dock Co., Chester, PA; Launched, 28 February 1943; Acquired by the Navy from the Maritime Commission, 17 May 1943; Commissioned USS Cossatot (AO-77), 20 April 1943; Decommissioned, 7 March 1946 at San Francisco, CA; Struck from the Naval Register, (date unknown); Transferred to the Maritime Administration for lay up in the National Defense Reserve Fleet; Reacquired, February 1949, operated under contract to the Naval Transportation Service; Placed In-Service with MSTS as USNS Cossatot (T-AO-77), 1 October 1949; Placed Out-of-Service, (date unknown); Transferred to the Maritime Administration for lay up in the National Defense Reserve Fleet; Struck from the Naval Register, 18 September 1974; Final Disposition, disposed of by MARAD sale, 2 September 1975, fate unknown.

Specifications: Displacement 5,782 t.(lt) 21,880 t.(fl); Length 523' 6"; Beam 68'; Draft 30'; Speed 15.5kts; Complement 251; Armament one 5"/38 dual purpose gun mount, four 3"/50 guns, four twin 40mm gun mounts, four twin 20mm gun mounts; Capacity 140,000 barrels; Propulsion, turbo-electric, single screw. 8,000hp.
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Cossatot 44k - Hyperwar US Navy in WWII
Cossatot 72k - Hyperwar US Navy in WWII

View the Cossatot (AO-77)
DANFS history entry located on the Haze Gray & Underway Web Site.
Crew Contact And Reunion Information
U.S.Navy Memorial Foundation
Fleet Reserve Association

Additional Resources and Web Sites of Interest
No Information Available
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