From Wiki
USS America (LHA-6) will be the first of the America-class amphibious assault ships for the U.S. Navy. She will be delivered in 2013, replacing USS Peleliu (LHA-5) of the Tarawa class. Her mission is to act as the flagship of an expeditionary strike group or amphibious ready group, carrying a marine expeditionary unit into battle and putting them ashore with helicopters and V-22 Osprey tilt-rotor aircraft, supported by F-35B Lightning II aircraft and helicopter gunships.
Her design is based on USS Makin Island (LHD-8) but with no well deck and smaller medical spaces to allow more room for aviation facilities. With a displacement of 45,000 tons she is as big as the aircraft carriers of other nations, and can fulfill similar missions when configured with 20 F-35B strike fighters
General characteristics
Class and type: America-class amphibious assault ship[2]
Displacement: Approx. 45,000 long tons (45,700 metric tons) full load
Length: 844 feet (257.3 meters)
Beam: 106 feet (32.3 meters)
Propulsion:
Two marine gas turbines, two shafts, 70,000 total brake horsepower,
two 5,000 horsepower auxiliary propulsion motors.
Speed: 20+ knots (37+ km/h)
Complement: 65 officers, 994 enlisted 1,687 Marines (plus 184 surge)
Sensors and processing systems:
AN/SPQ-9B fire control AN/SPS-48E airsearch radar[5]
Electronic warfare and decoys:
AN/SLQ-32B(V)2
2×Mk53 NULKA decoy launchers[5]
Armament:
2× Rolling Airframe Missile launchers
2× Evolved Sea Sparrow Missile launchers
2× 20 mm Phalanx CIWS mounts
7× twin .50 BMG machine guns (there you go John)
Aircraft carried:
MV-22B Osprey
F-35B Lightning II
CH-53K Super Stallion
UH-1Y Venom
AH-1Z Viper
MH-60S Seahawk