San Antonio-class amphibious transport dock

USS San Antonio and USS New York in June 2011
Class overview
Builders	Avondale Shipyard (closed since 2014) Ingalls Shipbuilding (current shipbuilder) Current Parent Company: Huntington Ingalls Industries (formerly Northrop Grumman Ship Systems) Ex-parent company: Litton Industries
Operators	United States Navy
Preceded by	Austin-class amphibious transport dock Newport-class tank landing ship Charleston-class amphibious cargo ship Whidbey Island-class dock landing ship
Cost	$1.602 billion (ave. for class, FY2012)[1] $2.021 billion (last ship, FY2012)[1]
Built	2000–present
In commission	2006–present
Planned	26 (13 for Flight I and 13 for Flight II)
On order	2
Building	2
Completed	12
Active	12
General characteristics [2]
Type	Amphibious transport dock
Displacement	25,300 t (full)
Length	684 ft (208 m)
Beam	105 ft (32 m)
Draft	23 ft (7.0 m), full load
Propulsion	Four sequentially turbocharged marine Colt-Pielstick diesel engines, two shafts, 41,600 shp
Speed	In excess of 22 knots (25 mph; 41 km/h)
Boats & landing craft carried	2 × LCACs (air cushion); or 1 × LCU (conventional) 14 × Amphibious Assault Vehicles
Complement	Crew: 28 officers, and 333 enlisted sailors Landing force: 66 officers, and 633 enlisted troops
Sensors and processing systems	AN/SPS-48G, AN/SPQ-9B[1]
Electronic warfare & decoys	AN/SLQ-32[1]
Armament	2 × Bushmaster II close-in-guns 2 × RIM-116 Rolling Airframe Missile launchers 2 × 8 cell Mark 41 Vertical Launching System for quad-packed ESSMs (not fitted) Several twin M2 Browning machine gun turrets
Aircraft carried	Launch or land up to two MV-22 Osprey tilt-rotor aircraft simultaneously with room to place four MV-22s on the flight deck and one in the hangar deck

The San Antonio class is a class of amphibious transport docks, also called a "landing platform, dock" (LPD), used by the United States Navy. These warships replace the Austin-class LPDs (including Cleveland and Trenton sub-classes), as well as the Newport-class tank landing ships, the Anchorage-class dock landing ships, and the Charleston-class amphibious cargo ships that have already been retired.^[2]

Twelve ships of the San Antonio class were originally proposed, their original target price was US$890 million;^[3] as built, their average cost is $1.6 billion.^[1] Defense Authorization for Fiscal Year 2015 included partial funding for the twelfth San Antonio-class ship. As of December 2022^[update] eleven warships of this class were in service with the U.S. Navy, with an additional three ships under construction.^[2] The Navy decided in 2018 to produce a second flight of 13 planned LPD Flight II ships, for a total of 26 in the LPD 17 class; LPD 30, Harrisburg, is the first Flight II ship.^[2]