Major U.S. defense contractor.
Its forerunner, the Electric Boat Co., was founded in 1899 and built the Holland , the first submarine purchased by the U.S. Navy. After World War II it diversified into military aircraft, armoured vehicles (including the M-1 battle tank), and natural gas tankers. The company was incorporated under its present name in 1952, and in 1954 it launched the Nautilus , the first nuclear-powered submarine; it later produced the Trident submarines. Its Gulfstream Aerospace subsidiary manufactures business jet aircraft.