Abstract: An energy storage system is for at least one electrical consumer in an electrical system of a watercraft. The at least one consumer is preferably a stabilizing device of the watercraft or a steering system for influencing the course of the watercraft. The energy storage system includes at least one converter connected to the electrical system for the supplying of the consumer. An energy storage is associated with the at least one converter.

Abstract: The invention relates to an energy supply system for a watercraft with a main energy converter that is configured for connection to an electrical system of the watercraft. According to invention, the main energy converter is connected to a DC busbar, and at least one inverter is connected to the DC busbar for supplying a consumer respectively associated with this inverter, and at least one electrical energy storage is connected to the DC busbar. Due to the common use of electrical components, among other things, a significant reduction of the installation space requirements of the energy supply system 100 is realizable for a watercraft.

Abstract: A device for the roll-stabilization of a watercraft in motion, at anchor, or at zero speed, and/or for influencing the course of the watercraft, includes a fin-carrying shaft on which a guide fin is disposed. For changing an actual angle of attack of the guide fin in the water, the fin-carrying shaft is drivable by an electromechanical drive unit, and the drive unit is disposed on the hull using a base. An electromechanical drive unit is configured with a synchronous motor that drives the fin-carrying shaft using a reducing eccentric transmission. The device thereby has a significantly reduced installation space requirement, causes only slight operating noises, and is also optimally electronically regulable.