How does a jet drive propel a boat?

A jet drive propels a boat by sucking up water and forcing it out to create thrust. This mechanism operates on the principle of jet propulsion, where water is drawn into the intake of the jet drive, typically located at the bottom of the boat, and then accelerated through a nozzle at the rear. When the water is expelled at high speed, it generates a forward thrust that propels the boat in the opposite direction, following Newton's third law of motion (for every action, there is an equal and opposite reaction).

Jet drives are particularly effective in shallow waters and are well-suited for various water conditions because they do not have exposed propellers, reducing the risk of damage and increasing safety for swimmers and marine life. This method of propulsion allows for increased maneuverability and can provide a strong thrust response, making jet drive systems popular in smaller boats, personal watercraft, and high-performance applications.