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Harpers Ferry-class dock landing ship
US Navy 071007-N-4014G-055 Dock landing ship USS Carter Hall (LSD 50) approaches Military Sealift Command fleet replenishment oiler USNS Tippecanoe (T-AO 199) for an underway replenishment
USS Carter Hall (LSD-50)
Class overview
Name: Harpers Ferry
Builders: Avondale Shipyard
Operators: Flag of the United States.svg United States Navy
Preceded by: Whidbey Island-class dock landing ship
Succeeded by: San Antonio-class amphibious transport dock
Cost: $324.2 million [1]
In commission: 1995 – present
Planned: 4
Completed: 4
Active: USS Harpers Ferry (LSD-49),
USS Carter Hall (LSD-50),
USS Oak Hill (LSD-51),
USS Pearl Harbor (LSD-52)
General characteristics
Displacement: 16,708 tons
Length: 609 ft (186 m)
Beam:   84 ft (26 m)
Draft:   21 ft (6.4 m)
Propulsion: Four Colt Industries, 16-cylinder diesels, two shafts, 33,000 shaft horsepower (25 MW)
Speed: 20+ knots (37 km/h)
Boats & landing
craft carried:
2 LCACs [1]
Complement: 22 officers, 391 enlisted
Armament: 2 × 25 mm Mk 38 cannons
2 × 20 mm Phalanx CIWS mounts
2 × RIM-116 Rolling Airframe Missile (RAM) launchers
6 × .50 caliber M2HB machine guns

The Harpers Ferry-class of the United States Navy is a class of dock landing ships completed in the early 1990s. Modified from the Whidbey Island class, it sacrifices landing craft capacity for more cargo space, making it closer to an amphibious transport dock type, but was not designated as such. Externally, the two classes can be told apart by the order of weapons. The Harper's Ferry type has the Phalanx CIWS mounted forward, and the RAM launcher on top of the bridge, while the Whidbey Island has the opposite arrangement.

All ships of the class are scheduled to undergo a midlife upgrade to ensure they remain in service through 2038. The ships will be upgraded each year through 2013, and the last ship will be modernized in 2014. Ships homeported on the East Coast will undergo upgrades at Metro Machine Corp., and ships based on the West Coast will receive upgrades at General Dynamics National Steel and Shipbuilding Company in San Diego.[2]

Major elements of the upgrade package include diesel engine improvements, fuel and maintenance savings systems, engineering control systems, increased air conditioning/chill water capacity, and replacement of air compressors. The ships also replaced steam systems with all-electric functionality that will decrease maintenance.[2]

The Harpers Ferry class shipsEdit

Ship Name Hull No. Builder Commissioned Homeport
Harpers Ferry LSD-49 Avondale Shipyard 7 January 1995 Naval Base San Diego (CA)
Carter Hall LSD-50 Avondale Shipyard 30 September 1995 Naval Amphibious Base Little Creek (VA)
Oak Hill LSD-51 Avondale Shipyard 8 June 1996 Naval Amphibious Base Little Creek (VA)
Pearl Harbor LSD-52 Avondale Shipyard 30 May 1998 Naval Base San Diego (CA)

SourcesEdit

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