San Antonio-class amphibious transport dock
_and_USS_New_York_(LPD_21)_are_underway_together_in_the_Atla.jpg)
USS San Antonio and USS New York in June 2011.
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| Class overview | |
|---|---|
| Builders: | Huntington Ingalls Industries (formerly Northrop Grumman Ship Systems) |
| Operators: | United States Navy |
| Preceded by: | |
| Succeeded by: | N/A—current authorized amphibious transport dock line |
| Cost: |
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| Built: | 2000–2017 (forecast) |
| In commission: | 2006–present |
| Building: | 2 |
| Planned: | 12 |
| Completed: | 10 |
| Active: | 10 |
| General characteristics | |
| 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: |
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| Complement: |
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| Sensors and processing systems: |
AN/SPS-48G, AN/SPQ-9B |
| Electronic warfare & decoys: |
AN/SLQ-32 |
| Armament: |
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| Aircraft carried: | Launch or land up to four CH-46 Sea Knight helicopters, or 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 older Austin-class LPDs (including Cleveland and Trenton sub-classes), as well as the Newport-class tank landing ships, and the Charleston-class amphibious cargo ships that have already been retired.
Twelve ships of the San Antonio class were proposed, but only eleven were funded. Their original target price was $890 million; as built, their average cost is $1.6 billion. Defense Authorization for Fiscal Year 2015 included partial funding for a twelfth San Antonio-class ship. As of November 2014[update] nine warships of this class are in service with the U.S. Navy with an additional three ships under construction or authorized.
The San Antonio class was designed to provide the Navy and U.S. 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 (since canceled) Expeditionary Fighting Vehicle (EFV), air-cushioned landing craft (LCACs), and future means by which Marines are delivered ashore. The ship is more than 45 percent larger than the Austin class, displacing more than 25,000 tons at full load. It carries fewer troops, but has twice as much space for vehicles, landing craft, and aircraft.
The project embraced a "Design for Ownership" philosophy; a concurrent engineering approach that injects operator, maintainer, and trainer input into the design development process. The goal was to ensure that operational realities are considered throughout the total ship design, integration, construction, test and life cycle support of the new ships and their systems. This process was intended to improve combat readiness, enhance quality of life, and reduce Total Ownership Costs, and resulted in numerous changes during the project.
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