The F-1 is the most powerful single-chamber liquid-fuel rocket engine ever flown. Five F-1 engines powered the first stage of the Saturn V rocket that carried astronauts to the Moon. The engine was built by the Rocketdyne division of North American Aviation, now The Boeing Company. It is 19 feet tall, 12 feet in diameter, weighs 18,500 pounds, produces 1,522,000 pounds of thrust, and used RP-1 kerosene and liquid oxygen as propellants. The power generated by the five F-1 engines on the Saturn V was equivalent to 190 gigawatts, almost twice the peak electrical power consumption of France, more than 90 times the peak power produced by Hoover Dam, and more than 630 times the power of a Boeing 747 aircraft.