The United States Navy

Amphibious Transport Dock - LPD

Updated: 10 September 2004

image of USS Juneau Description: Warships that embark, transport, seabase and land elements of a landing force for a variety of expeditionary warfare missions.

Features: The amphibious transports are used to transport, seabase and land Marines, their equipment and supplies by embarked air cushion or conventional landing craft or amphibious vehicles, augmented by helicopters or vertical take off and landing aircraft in amphibious assault, special operations, or expeditionary warfare missions.

Background: The versatile Austin-class LPDs provide substantial amphibious lift for Marine troops and their vehicles and cargo. Additionally, they serve as the secondary aviation platform for amphibious ready groups. The oldest of the class turned 38 in early 2003. As the new San Antonio-class LPDs enter service, Austin-class LPDs will be decommissioned.

A contract for final design and construction of San Antonio (LPD 17), the lead ship in the class, was awarded in December 1996; actual construction commenced in August 2000. The lead ship contract contained options for New Orleans (FY 1999) and one of the FY 2000 follow-on ships, Mesa Verde (LPD 19) and Green Bay (LPD 20). These options were exercised in December 1998 and February 2000. A negotiated modification added the second FY 2000 ship, Green Bay, in May 2000. The Navy awarded the contract to build New York (LPD 21), in November 2003. By the end of 2003, construction of San Antonio was more than 80 percent complete, New Orleans was more than 35% complete, and Mesa Verde was more than 25% complete.

The keel of Green Bay was laid in August 2003 and the bow stem of New York was cast in September 2003, using tons of steel salvaged from the World Trade Center. The 12 ships of the LPD 17 class are a key element of the Navy’s seabase transformation. Collectively, these ships functionally replace over 41 ships (LPD 4, LSD 36, LKA 113, and LST 1179 classes of amphibious ships) providing the Navy and Marine Corps with modern, seabased platforms that are networked, survivable, and built to operate with 21st century transformational platforms, such as the MV-22 Osprey, the Expeditionary Fighting Vehicle (EFV), and future means by which Marines are delivered ashore.

Point of Contact:
Public Affairs Office
Naval Sea Systems Command
Washington, DC 20362

Artist concept drawing of San Antonio Class ship

General Characteristics, San Antonio class

Builders: Northrop Grumman Ships Systems, with Raytheon Systems Corporation and Intergraph Corporation.
Power plant: 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 tons (25,300 metric tons) full load
Speed: in excess of 22 knots (24.2 mph, 38.7 kph)
Aircraft: Launch or land two CH53E Super Stallion helicopters or up to four CH-46 Sea Knight helicopters, MV-22 Osprey tilt rotor aircraft, AH-1 or UH-1 helicopters
Armament: Two Bushmaster II 30 mm Close in Guns, fore and aft; two Rolling Airframe Missile launchers, fore and aft.
Landing Craft/Assault Vehicles: Two LCACs or one LCU; and 14 Advanced Amphibious Assault Vehicles.
Ships:
San Antonio (LPD 17)
New Orleans (LPD 18)
Mesa Verde (LPD 19)
Green Bay (LPD 20)
New York (LPD 21)
San Diego (LPD 22)

Anchorage (LPD 23)
Arlington (LPD 24)
Somerset (LPD 25)
Crew:
Ship's Company: 361 (28 officers, 333 enlisted)
Embarked Landing Force: 699 (66 officers, 633 enlisted); surge capacity to 800

General Characteristics Austin class

Builders:
LPD 4-6, New York Naval Shipyard
LPD 7 and LPD 8, Ingalls Shipbuilding
LPD 9, 10, 12-15, Lockheed Shipbuilding
Unit cost: $235-419 million
Power plant: 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)
Aircraft: Up to six CH-46 Sea Knight helicopters
Ships:
USS Austin (LPD 4), Norfolk, Va.
USS Ogden (LPD 5), San Diego, Calif.
USS Duluth (LPD 6), San Diego, Calif.
USS Cleveland (LPD 7), San Diego, Calif.
USS Dubuque (LPD 8), San Diego, Calif.
USS Denver (LPD 9), San Diego, Calif.
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.
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.
Date Deployed: Feb. 6, 1965 (USS Austin)


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