As one of the leading hybrid drive companies, Siemens offers both series and parallel hybrid systems for both the commercial and pleasure boat market, making economic electric propulsion available to boatyards around the world.
A parallel hybrid allows the propeller shaft to be driven by both the conventional engine and the electric motor.
A series hybrid drives the propeller shaft with an electric motor. The conventional engine is mechanically decoupled from the propeller shaft and operates as a generator to provide power electrically to the drive system.
Hybrid indicates there is an option of taking power either from a battery or a generator. The alternative is an EV or electric vehicle, which operates only on battery power.