The jet ski is a simple enough craft to understand. You put a powerful combustion engine into a small hull big enough to stand or sit on. You pair it with a jet drive that squirts water out the ...

The Carver by Onean is an electric jet board that ... perfect for lakes that prohibit gas-powered boats. Cut across calm waters with ease. The jet propulsion will thrust you forward.

The boat uses compressed air for propulsion, stored in a battery of four soda bottles, pressurized to 6 bar. The compressed air is used to drive a Tesla turbine of [Integza]’s design ...