Abstract: A control unit incorporated in a stabilizing system in yachts and sailing vessels and intended automatically to control the movements of a weight which is movable transversely across the vessel, said wight being connected with an athwartships tiltable mast in such a manner, that the weight is displaced transversely across the vessel in a direction opposite to the mast tilting direction. The control unit comprises two stops arranged to stop the movements of the weight, and further comprises a shifting device which is actuated by the position of the wight so that one of the stops is given an opportunity to act, i.e. to stop the movements of the weight, when the weight is positioned to one side of the centre line of the vessel in the transverse direction thereof whereas the second stop is then not given an opportunity to stop the movements of the weight, and vice versa. Each stop is controlled by a sensing device responsive to the movements of the vessel.

Abstract: A system for maintaining the hull of a sailing boat in a steady position substantially independent of wind pressures on the sail, comprising a pivoted mast and wires connecting the mast with a weight in the boat hull via a transmission device. Transverse pivoting movement of the mast causes lateral displacement of the weight thereby maintaining the hull in a stable condition.