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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, sea-based platforms that are networked, survivable and built to operate with 21st century transformational platforms, such as the MV-22 Osprey, the upgraded Amphibious Assault Vehicle 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 18-26 have been delivered to the Navy with the future USS Portland (LPD 27) expected to deliver in 2017. USS New York (LPD 21) was 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 eighth and ninth 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. LPD 26 delivered to the Navy in May 2016 and LPD 27 is currently under construction at Huntington Ingalls Industries (HII) on the Gulf Coast. The Navy awarded Huntington Ingalls the detail design and construction of LPD 28 (Fort Lauderdale) Dec. 19, 2016. As the 12th San Antonio class ship, LPD 28 will perform the same missions as the previous 11 ships of the class while incorporating technically feasible cost reduction initiatives and class lessons learned.
 
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: 380 Sailors (29 officers, 351 enlisted) and 3 Marines. Embarked Landing Force: 699 (66 officers, 633 enlisted); surge capacity to 800
Armament: Two Mk 46 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 CH-53E Super Stallion helicopters or two MV-22 Osprey tilt rotor aircraft or up to four AH-1 or UH-1 helicopters
Landing/Attack Craft: Two LCACs or one LCU; and 14 Amphibious Assault Vehicles
Ships:
USS San Antonio (LPD 17), Norfolk, Virginia
USS New Orleans (LPD 18), San Diego, California
USS Mesa Verde (LPD 19), Norfolk, Virginia
USS Green Bay (LPD 20), San Diego, California
USS New York (LPD 21), Norfolk, Virginia
USS San Diego (LPD 22), San Diego, California
USS Anchorage (LPD 23), San Diego, California
USS Arlington (LPD 24), Norfolk, Virginia
USS Somerset (LPD 25), San Diego, California
PCU John P. Murtha (LPD 26), San Diego, California
PCU Portland (LPD 27), Under construction - San Diego, California
PCU Fort Lauderdale (LPD 28) - Detail Design and Construction contract awarded Dec 19, 2016
 
General Characteristics
Ships:
 
Last Update: 9 January 2017
 
 
ATLANTIC OCEAN (May 15, 2016) The amphibious transport dock ship USS San An
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