Method for actively damping a ship's motion as well as such an active roll stabilisation system

A system for actively damping a ship's motion, comprising at least

• one first rotatable damping element extending from the ship's hull, below the water line, on a side of the ship,
• sensor means for sensing the ship's motion and delivering control signals on the basis thereof,
• driving means for rotatably driving the stabilization element on the basis of the control signals being delivered for the purpose of damping the ship's motion being sensed,
• wherein the sensor means furthermore are an tinged in sensing the ship's speed as well as the current frictional resistance experienced by the stabilizing elements and the system furthermore comprising
• moving means which position the stabilization element at an angle relative to a longitudinal axis of the ship on the basis of the delivered control signals and the speed of the ship and the determined current frictional resistance so as to realize a minimal resistance while the ship is sailing.

A system actively damping a ships motion, comprising at least

• one first rotatable damping element extending from the ship's hull, below the water line, on a side of the ship,
• sensor means for sensing the ship's motion and delivering control signals on the basis thereof,
• driving means for rotatably driving the stabilization element on the basis of the control signals being delivered for the purpose of damping the ship's motion being sensed, as well as
• moving means which position the stabilization element at an angle relative to a longitudinal axis of the ship on the basis of the delivered control signals and the speed of the ship and the determined current frictional resistance so as to realize a minimal resistance while the ship is sailing,
• characterized in that the sensor means are designed to determine the current sailing speed and comparing said current sailing speed with a reference sailing speed and delivering control signals to the driving means and the moving means, respectively, on the basis of this comparison, such that if the current sailing speed is lower than the reference sailing speed, the driving means will drive the stabilization element at a rotational speed of more than 0 rpm, and that if the current sailing speed is higher than the reference sailing speed, the driving means will drive the stabilization element at a rotational speed equal to 0 rpm and the moving means will pivot the non-rotating stabilization element to and fro.