History of the Kitty Hawk class Carrier

The Kitty Hawk-class supercarriers of the United States Navy were an incremental improvement on the Forrestal-class vessels. Three were built, all in the 1960s, Kitty Hawk (CV-63) (1961-2009), Constellation (CV-64) (1961-2003), America (CV-66) (1965-1996), as well as the variant John F. Kennedy (CV-67) (1967-2007). All are now decommissioned.
The biggest differences from the Forrestals are greater length, and a different placement of elevators; two are forward of the island, one is aft of the island and another on the portside stern. The movement of the No. 4 elevator from the forward to the after end of the angle made it useful for aircraft movement, since the forward-end elevator in the Forrestals was sited in both the landing path and in the launch path of the waist catapults.
Three different shipyards were used to construct the ships. Kitty Hawk was built at New York Shipbuilding Corporation, Constellation at New York Naval Shipyard, America and John F. Kennedy at Newport News Shipbuilding. John F. Kennedy is similar to the earlier units in flightdeck arrangement and propulsion, but has enough differences that she is placed in her own class. Propulsion consisted of four Westinghouse geared turbines, 280,000 shaft horsepower (210,000 kW), four shafts with eight 1,200 pounds per square inch (8,300 kPa) Foster Wheeler boilers.
America was designed under project SCB 127B and so had several differences from the lead units of the class. Instead of two forward anchors, one on each side, America had no port side anchor and an additional anchor astern, a change made to accommodate the AN/SQS-23 sonar. America was the only post-World War II U.S. carrier to be built with sonar, which was however removed in the early 1980s. She also had a narrow smokestack compared to prior units.