Boat rudders; Canoes; Inflatable boats; Kayak equipment, namely, paddles; Kayak paddles; Kayaks; Oars; Paddles for canoes; Rowboats; Screw propellers; Screw-propellers for boats; Steering wheel attachment comprised of an electric motor and drive gear and a ring gear that when activated by an external controller, turns the steering wheel to effect automatic vehicle steering in straight or curved paths