Aquabat™ drive pat. app.

The nozzle has a radial array of small 'stator' fins   to enhance the redirecting of the exhaust flow and to unwind the torque inducing vortex. It cannot foul.

The propeller is a hybrid ducted extending pitch screw connected directly to the drive motor and fully shrouded for safety. The unique design has a relatively shallow pitch at it's leading edge to avoid cavitation.

The brushless motor uses solid state commutation for long life and reliability. It is controlled by a servo amplifier the throttle behaves as car accelerator.