The America-class amphibious assault ships (formerly the LHA(R) class) of the U.S. Navy was designed to put ashore a Marine Expeditionary Unit using helicopters and MV-22B Osprey V/STOLs, supported by AV-8B Harrier or F-35 Lightning II V/STOL fighter planes and various attack helicopters. The first of these warships should be delivered to the U.S. Navy in 2013 to replace the USS Peleliu (LHA-5) of the Tarawa-class amphibious assault ships. The design of the America class was based on that of the USS Makin Island (LHD-8), the last ship of the Wasp class, but the "Flight 0" ships of the America class will not have well decks, and they have smaller on-board hospitals in order to give more space for aviation uses.