The H-1 Rocket was a powerful launch vehicle developed by the United States in the 1960s. It was designed to support the Apollo program, which aimed to land humans on the Moon. The rocket was notable for its use of five F-1 engines, making it one of the most powerful rockets of its time. The H-1 was primarily used in the Saturn I and Saturn IB configurations. It played a crucial role in early crewed space missions, including the first crewed flight of the Apollo program. Its successful launches helped pave the way for the historic Apollo 11 Moon landing in 1969.