Jet skis travel through the water in the same way as rockets fly in the air. However, unlike rockets, jet skis do not use high-pressure gas to generate thrust, but use jet-driven devices to generate a powerful current of water. Through the jet driving device, a large amount of water at the bottom of the boat is sprayed behind the boat through the deflector tube under the impeller.

The impeller of a jet ski is a rotor-like device installed in a cylindrical channel in the hull. The engine drives the impeller to rotate through the drive shaft. The curved blades of the impeller rotate rapidly, driving the water flow to spray out through the cylindrical channel and the turning guide pipe.

Then these jet skis need to lean on the corresponding Jet Ski Dock after the activity runs through the trajectory, so that it is convenient to continue using it next time.