USNS Big Horn (T-AO-198) - IMO 8812162



Name: USNS Big Horn
Namesake: The Bighorn River in Wyoming and Montana
Ordered: 20 June 1988
Builder: Avondale Shipyard, Inc., New Orleans, Louisiana
Laid down: 9 October 1989
Launched: 2 February 1991
In service: 21 May 1992-present
Identification:
Status: In active Military Sealift Command service
Badge: USNS Big Horn T-AO-198 Crest.png
General characteristics
Class and type: Henry J. Kaiser-class fleet replenishment oiler
Type: Fleet replenishment oiler
Tonnage: 31,200 deadweight tons
Displacement:
  • 9,500 tons light
  • Full load variously reported as 42,382 tons and 40,700 long tons (41,353 metric tons)
Length: 677 ft (206 m)
Beam: 97 ft 5 in (29.69 m)
Draft: 35 ft (11 m) maximum
Installed power:
  • 16,000 hp (11.9 MW) per shaft
  • 34,442 hp (25.7 MW) total sustained
Propulsion: Two medium-speed Colt-Pielstick PC4-2/2 10V-570 diesel engines, two shafts, controllable-pitch propellers
Speed: 20 knots (37 km/h; 23 mph)
Capacity:
Complement: 103 (18 civilian officers, 1 U.S. Navy officer, 64 merchant seamen, 20 U.S. Navy enlisted personnel)
Armament:
  • Peacetime: usually none
  • Wartime: probably 2 x 20-mm Phalanx CIWS
Aircraft carried: None
Aviation facilities: Helicopter landing platform
Notes:
  • Five refueling stations
  • Two dry cargo transfer rigs

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