Future amphibious assault ship USS America (LHA 6) sea trials in the Gulf.br Pre-Commissioning Unit (PCU) America (LHA 6) returns from sea trials to Ingalls Shipyard. During the trials, the ships main propulsion, communications, .br The ships design is based on USS Makin Island (LHD-8) With a displacement of 45000 tons, the ship is as large as the aircraft carriers of other nations, and can .br USS AMERICA returning to Pascagoula, MS from sea trials.amazing to think it was built in Mississippi..