Amphibious Assault Ships

Wasp Class

Builder: Northrop Grumman Ship Systems Ingalls Operations, Pascagoula, MS.

Date Deployed: July 29, 1989 (USS Wasp)

Propulsion: (LHDs 1–7) two boilers, two geared steam turbines, two shafts, 70,000 total shaft horsepower; (LHD 8) two gas turbines, two shafts; 70,000 total shaft horsepower, two 5,000 horsepower auxiliary propulsion motors.

Length: 844 feet (253.2 meters).

Beam: 106 feet (31.8 meters).

Displacement: LHDs 1-4: 40,650 tons full load (41,302.3 metric tons)
LHDs 5-7: 40,358 tons full load (41,005.6 metric tons)
LHD 8: 41,772 tons full load (42,442.3 metric tons).

Speed: 20+ knots (23.5+ miles per hour).

Crew: Ships Company: 104 officers, 1,004 enlisted

LHD 8: 65 officers, 994 enlisted

Marine Detachment: 1,687 troops (plus 184 surge).

Armament: Two RAM launchers; two NATO Sea Sparrow launchers; three 20mm Phalanx CIWS mounts (two on LHD 5-8); four .50 cal. machine guns; four 25 mm Mk 38 machine guns (LHD 5-8 have three 25 mm Mk 38 machine guns).

Aircraft: 12 CH-46 Sea Knight helicopters; 4 CH-53E Sea Stallion helicopters; 6 AV-8B Harrier attack aircraft; 3 UH-1N Huey helicopters; 4 AH-1W Super Cobra helicopters. (planned capability to embark MV-22 Osprey VTOL tilt-rotors).
amphibious
Ships:
USS Wasp (LHD 1), Norfolk, VA
USS Essex (LHD 2), Sasebo, Japan
USS Kearsarge (LHD 3), Norfolk, VA
USS Boxer (LHD 4), San Diego, CA
USS Bataan (LHD 5), Norfolk, VA
USS Bonhomme Richard (LHD 6), San Diego, CA
USS Iwo Jima (LHD 7), Norfolk, VA
Makin Island (LHD 8) – under construction

Tarawa Class

Builder: Ingalls Shipbuilding, Pascagoula, MS.

Date Deployed: May 29, 1976 (USS Tarawa)

Propulsion: Two boilers, two geared steam turbines, two shafts, 70,000 total shaft horsepower.

Length: 820 feet (249.9 meters).

Beam: 106 feet (31.8 meters).

Displacement: 39,400 tons (40,032 metric tons) full load.

Speed: 24 knots (27.6 miles per hour).

Crew: Ships Company: 82 officers, 882 enlisted

Marine Detachment 1,900 plus.

Armament: Two RAM launchers; two Phalanx 20 mm CIWS mount; three .50 cal. machine guns; four 25 mm Mk 38 machine guns.

Aircraft: 12 CH-46 Sea Knight helicopters; 4 CH-53E Sea Stallion helicopters; 6 AV-8B Harrier attack aircraft; 3 UH-1N Huey helicopters; 4 AH-1W Super Cobra helicopters.

Ships:
USS Tarawa (LHA 1), San Diego, CA
USS Nassau (LHA 4), Norfolk, VA
USS Peleliu (LHA 5), San Diego, CA

San Antonio class

Builder: Northrop Grumman Ships Systems, with Raytheon Systems Corporation and Intergraph Corporation.

Propulsion: Four sequentially turbocharged marine Colt-Pielstick Diesels, two shafts, 41,600 shaft horsepower.

Length: 684 feet (208.5 meters).

Beam: 105 feet (31.9 meters).

Displacement: Approximately 24,900 long tons (25,300 metric tons) full load.

Speed: In excess of 22 knots (24.2 mph, 38.7 kph).

Crew: Ship’s Company: 360 Sailors (28 officers, 332 enlisted)

Embarked Landing Force: 699 (66 officers, 633 enlisted); surge capacity to 800.

Armament: Two Bushmaster II 30 mm Close in Guns, fore and aft; two Rolling Airframe Missile launchers, fore and aft.

Aircraft: Launch or land two CH53E Super Stallion helicopters or two MV-22 Osprey tilt rotor aircraft or up to four CH-46 Sea Knight helicopters, AH-1 or UH-1 helicopters.

Landing/Attack Craft: Two LCACs or one LCU; and 14 Expeditionary Fighting Vehicles/Amphibious Assault Vehicles.

Ships:
USS San Antonio (LPD 17), Norfolk, VA
USS New Orleans (LPD 18), San Diego, Calif.
USS Mesa Verde (LPD 19), Norfolk, VA
Green Bay (LPD 20)
New York (LPD 21), Norfolk, VA (effective 1 June 2009]
San Diego (LPD 22)
Anchorage (LPD 23)
Arlington (LPD 24)
Somerset (LPD 25)

Austin class

Builder: LPD 4-6, New York Naval Shipyard
LPD 7 and LPD 8, Ingalls Shipbuilding
LPD 9, 10, 12-15, Lockheed Shipbuilding.

Date Deployed: Feb. 6, 1965 (USS Austin)

Unit Cost: $235-419 million.

Propulsion: Two boilers, two steam turbines, two shafts, 24,000 shaft horsepower.

Length: 570 feet (171 meters).

Beam: 84 feet (25.2 meters).

Displacement: Approximately 17,000 tons (17,272.82 metric tons) full load.

Speed: 21 knots (24.2 mph, 38.7 kph).

Crew: Ship’s Company: 420 (24 officers, 396 enlisted), Marine Detachment: 900.
Armament: Two 25mm Mk 38 guns; two Phalanx CIWS; and eight .50-calibre machine guns.

Aircraft: Up to six CH-46 Sea Knight helicopters.

Ships:
USS Ogden (LPD 5), San Diego, CA
USS Cleveland (LPD 7), San Diego, CA
USS Denver (LPD 9), San Diego, CA
USS Juneau (LPD 10), Sasebo, Japan
USS Shreveport (LPD 12), Norfolk, VA
USS Nashville (LPD 13), Norfolk, VA
USS Trenton (LPD 14), Norfolk, VA
USS Ponce (LPD 15), Norfolk, VA