Engineers installing Saturn V F-1 engine at the S-IC test stand showing skirt adapter on 2nd engine. The Saturn V was the launch vehicle for NASA's Apollo program of manned missions to the Moon (1961 to 1975). The Saturn V was one of the most powerful rockets ever made. Five F-1 engines were used in the first (take-off) stage of the Saturn V rockets. These engines burnt hundreds of tonnes of liquid oxygen and rocket fuel (kerosene) in around three minutes, lifting the 110-metre high, 3000-tonne rocket to an altitude of 68 kilometres and a speed of 2.4 kilometres per second. Photographed at the Marshall Space Flight Center, Huntsville, Alabama, USA, on 27th of March 1965. Engineers at the Marshall Space Flight Center install the F-1 engines on the S-IC stage thrust structure at the S-IC static test stand. Engines are installed on the stage after it has been placed in the test stand. Five F-1 engines, each weighing 10 tons, gave the booster a total thrust of 7,500,000 pounds, roughly equivalent to 160 million horsepower.