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San Antonio Class Amphibious Transport Dock

Amphibious transport dock ships are warships that embark, transport, and land elements of a landing force for a variety of expeditionary warfare missions. Amphibious transport docks are used to transport and land Marines, their equipment and supplies by embarked Landing Craft Air Cushion or conventional landing craft and Amphibious Assault Vehicles augmented by helicopters or vertical take off and landing aircraft. These ships support amphibious assault, special operations or expeditionary warfare missions and can serve as secondary aviation platforms for amphibious ready groups.
San Antonio Class Amphibious Transport Dock Copyright © Huntington Ingalls Industries

Status

In active service

Contractor

Builder: Huntington Ingalls Industries

Complement

Ship's Company
28 Officers
346 Enlisted Personnel
3 Marines

Capacity

Troops
699 combat troops (66 officers, 633 enlisted)
Vehicles
14 x Amphibious Assault Vehicle
Landing Craft
1 x Landing Craft Utility 1646 Class
- OR -
2 x Landing Craft Air Cushion
Aircraft
3 x Sikorsky H-53 (2 on stern, 1 in hangar)
- OR -
9 x AH-1Z Viper (6 on stern, 3 in hangar)
- OR -
3 x MV-22 Osprey (2 on stern, 1 in hangar)
- OR -
6 x CH-46 Sea Knight (4 on stern, 2 in hangar)

Characteristics

Dimensions
Length: 208.5 meters 684 feet
Beam: 31.9 meters 105 feet
Draft: 7 meters (at full load) 23 feet (at full load)
Weight
Displacement: ~25 300 metric tons (at full load) 24 900 long tons (at full load)
Features
Propulsion: four sequentially turbocharged marine Colt-Pielstick diesel engines, two shafts
Performance: 41 600 shaft horsepower
Speed: 22 knots (38.7 kilometers per hour) (25.32 miles per hour)

Ship list

Hull number Ship name Commissioned Decommissioned Status
LPD 17 USS San Antonio 2006-01-11 - In active service
LPD 18 USS New Orleans 2007-03-10 - In active service
LPD 19 USS Mesa Verde 2007-12-15 - In active service
LPD 20 USS Green Bay 2009-01-24 - In active service
LPD 21 USS New York 2009-11-07 - In active service
LPD 22 USS San Diego 2012-05-19 - In active service
LPD 23 USS Anchorage 2013-05-04 - In active service
LPD 24 USS Arlington 2013-04-06 - In active service
LPD 25 USS Somerset 2014-03-01 - In active service
LPD 26 USS John P. Murtha 2016-08-11 - In active service
LPD 27 PCU Portland - - Under construction
LPD 28 - - Ordered