Aggressive Class Minesweeper
Laid down, 22 September 1953 as AM-490 by the J. L. Martinac Shipbuilding Corp., Tacoma, Wash
Launched, 15 September 1954
Redesignated as an Ocean MinesweeperMSO-490, 7 February 1955
Commissioned USS Leader (MSO-490), 16 November 1955
Decommissioned, 12 December 1991
Struck from the Naval Register, 18 March 1992
Sold for scrapping, 18 August 1994 by Defense Reutilization and Marketing Service to NR Aquilinity, New York, NY, for $28,880.
Broken up at Wilmington, NC.

Specifications:
Displacement 775 t
Length 172'
Beam 35'
Draft 12'
Speed 14 kts
Complement 8 Officers, 70 Enlisted
Armament, as built, one single 40mm gun mount, two .50 cal machine guns
Final configuration, bow gun removed, two .50 cal. machine guns remain
Propulsion, four Packard ID1700 diesel engines, replaced by four Waukasha Motors Co. diesels
Two shafts
Two controllable pitch propellers