The vertical surface across the back of the boat. The propeller is the only force that moves the boat. They are custom made and may have 3 blades. A blade mounted on the transom that is controlled by the steering wheel to turn the boat. A tube runs along on the rudder which fills with water and runs throughout the boat to the engine for cooling purposes.
Water is extracted from the motor through the water outlets usually on the top of the deck.
The two pontoon-like parts at the front of the hull. Changing its shape, angle of attack or how the hulls rides. The blade mounted to the rear of the left sponson. It helps keep the boat from sliding to the right as it makes a turn. Changing the length of the airtrap changes the hulls ride.