Patent attributes
A retrofittable watercraft propulsion device enables motorized propulsion and maneuvering of a watercraft occupied by a user. The retrofittable watercraft propulsion device includes an elongated shaft, an impeller pump, a handle, a control input device, a portable power source, a swivel bracket, and a microprocessor. The elongated shaft submerges the impeller pump below the waterline and provides support for the user while the watercraft is in motion. The impeller pump harnesses the water and generates thrust to propel and maneuver the watercraft. The control input device allows the user to throttle or brake the impeller pump. The portable power source supplies electrical energy to the microprocessor and the impeller pump. The swivel bracket swivels the elongated shaft and redirects the thrust of the impeller pump. Finally, the microprocessor controls the impeller pump based on how the user operates the control input device.