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'CATOBAR' ('C'atapult 'A'ssisted 'T'ake 'O'ff 'B'ut 'A'rrested 'R'ecovery) is a system used for the launch and recovery of aircraft from the deck of an aircraft carrier. Aircraft launch using a catapult assisted take-off. However, these are conventional, rather than STOVL aircraft, and thus require arrestor wires to land on the ship. Only three countries operate carriers that use the CATOBAR system; the U.S. ''Nimitz'' class, USS Enterprise (CVN-65) and USS Kitty Hawk (CV-63), France's ''Charles De Gaulle'', and Brazil's ''NAeL São Paulo''.