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Amphibious Transport Dock - LPD

 
Description



Amphibious transport dock ships are warships that embark, transport, and land elements of a landing force for a variety of expeditionary warfare missions.
 
Features
LPDs are used to transport and land Marines, their equipment and supplies by embarked Landing Craft, Air Cushion (LCAC) or conventional landing craft and Amphibious Assault Vehicles (AAV) augmented by helicopters or vertical take-off and landing aircraft (MV 22). These ships support amphibious assault, special operations or expeditionary warfare missions and can serve as secondary aviation platforms for amphibious ready groups.
 
Background

The LPD 17 San Antonio class is the functional replacement of over 41 ships from the following: LPD 4 Austin-class, LSD 36 Anchorage-class, LKA 113 Charleston-class, and LST 1179 Newport-class amphibious ships. The San Antonio class provides  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 and future means by which Marines are delivered ashore.

Construction on USS SAN ANTONIO (LPD 17), the first ship of  the class, commenced in June 2000 and was delivered to the Navy in July 2005. LPDs 18-25 have been delivered to the Navy with the future USS JOHN P MURTHA (LPD 26), and the future USS PORTLAND (LPD 27), are expected to deliver in early 2016 and 2017 respectively. USS New YORK (LPD 21) is the first of three LPD 17-class ships built in honor of the victims of the Sept. 11, 2001, terrorist attacks. The ship’s bow stem was cast using 7.5 tons of steel salvaged from the World Trade Center. The Navy named the 8th and 9th ships of the class - ARLINGTON and SOMERSET - in honor of the victims of the attacks on the Pentagon and United Flight 93, respectively. Materials from those sites were also incorporated into ARLINGTON and SOMERSET. LPDs 26 and 27 are currently under construction at Huntington Ingalls Industries (HII) on the Gulf Coast, and will deliver over the next few years.  On Dec. 4, 2015, the Navy awarded Huntington Ingalls a contract action for LPD 28 long lead time material to support detail design and construction.  As the 12th San Antonio-class ship, LPD 28 will be used to support amphibious assault, special operations or expeditionary warfare missions and can serve as secondary aviation platforms for amphibious ready groups.

 
Point Of Contact
Corporate Communications Office
Naval Sea Systems Command (SEA 00D)
Washington, D.C. 20376
 
General Characteristics, San Antonio Class
Builder: Huntington Ingalls Industries
Propulsion: Four sequentially turbocharged marine Colt-Pielstick Diesels, two shafts, 41,600 shaft horsepower
Length: 684 ft
Beam: 105 ft
Displacement: Approximately 24,900 long tons (25,300 metric tons) full load
Draft: 23 ft
Speed: In excess of 22 knots (24.2 mph, 38.7 kph)
Crew: Ship's Company: 374 Sailors (28 officers, 346 enlisted) and 3 Marines. 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: ten .50 caliber machine guns
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, CA
USS Mesa Verde (LPD 19), Norfolk, VA
USS Green Bay (LPD 20), San Diego, CA
USS New York (LPD 21), Norfolk, VA
USS San Diego (LPD 22), San Diego, CA - Christened June 12, 2010.
USS Anchorage (LPD 23), San Diego - Christened May 14, 2011, Commissioned May 4, 2013
USS Arlington (LPD 24), Norfolk, VA - Christened March 26, 2011, Commissioned April 6, 2013
USS Somerset (LPD 25), San Diego, CA
PCU John P. Murtha (LPD 26) - under construction - San Diego, CA
PCU Portland (LPD-27), Under construction - San Diego, CA
 
General Characteristics
Ships:
 
Last Update: 12 January 2016
 
 
LPD 17 underway