The America class (formerly the LHA(R) class) is a ship class of landing helicopter assault (LHA) type amphibious assault ships of the United States Navy (USN). The class is designed to put ashore a Marine Expeditionary Unit using helicopters and MV-22B Osprey V/STOL transport aircraft, supported by AV-8B Harrier II or F-35 Lightning II V/STOL aircraft and various attack helicopters. The first of these warships was commissioned by the U.S. Navy in 2014 to replace of the ; as many as eleven will be built. The design of the America class is based on that of , the last ship of the Wasp class, but the "Flight 0" ships of the America class will not have well decks, and have smaller on-board hospitals to provide more space for aviation uses. Although they only carry helicopters and V/STOL aircraft, the America class, with a displacement of about , is similar in size to the French and the Indian fixed-wing aircraft carriers. Also, while more than shorter, America class ships are of comparable displacement to the former US Navy s. Ships of the America class can be used as a small aircraft carrier with a squadron of jet fighters plus several multipurpose helicopters, such as the MH-60 Seahawk. They can carry about 20 to 25 AV-8B, F-35Bs, or a mixture of the two, but the future ships of this class, starting with , will have smaller aircraft hangars to leave room for larger amphibious warfare well decks. Design America is based on the design of , itself an improved version of the s with gas turbine power. About 45 percent of the "Flight 0" design of this class is based on that of Makin Island, but with its well deck omitted to allow more room for aircraft, their spare parts and weapons, and their fuel. The gas turbines of Makin Island, America, and its successors use JP-5 fuel which is the same fuel used by their helicopters, the jet engines of their AV-8B Harrier and MV-22 Osprey aircraft and, in future ships, the gas turbines of the Landing Craft Air Cushions (LCACs) that they could carry in their well decks. This commonality greatly simplifies the storage, distribution, and use of the fuels. The typical aircraft complement for the first two vessels is expected to be twelve MV-22B Osprey transports, six F-35B Lightning II STOVL multi-role jet aircraft, four CH-53K heavy transport helicopters,