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(Image: Bezos Expeditions)
Here's the nozzle from one of the engines sitting on the ocean floor.
For each flight, five Saturn V F-1 engines had only about two-and-a-half minutes to lift the rocket 36 miles above the Earth, and reach a speed of 6,000mph. After the liquid oxygen and kerosene fuel mixture was spent, the engines fell back into the ocean at about 5,000mph.