Abstract: This present invention relates to a device for driving a vehicle, in particular a watercraft, which comprises a combustion engine adapted to coact with a generator for generation of electrical energy, an energy storage device adapted to coact with the generator via a rectifier for storage of electrical energy made available by the generator and for energy output as and how required, and a drive system that is adapted to be activated by a motor control device and that comprises at least one electric motor wherein the energy for operating the electric motor can be supplied by the generator and/or the energy storage device at option and wherein said motor control device comprises at least two functionally independent motor control modules for operating the electric motor.

Abstract: A device for controlling a vehicle, in particular a watercraft with a drive system with an energy generating device including a combustion engine, an electric generator adapted to coact with said combustion engine, and a rectifier for rectifying the electrical energy; an energy storage device to store the electrical energy for energy output as and how required; and an energy distribution system for distributing the energy made available by the energy generating and/or the energy storage device to at least one electric motor used to drive a propeller, as well as to other electric power consumers. A central control unit is data-technically coupled with the energy generating device, the energy storage device and the energy distribution system to coordinate energy generation, storage and distribution. The central control device has output means for display of information to a user and/or input means (19) for entry of signals by a user.