ANTI-ROLL STABILIZER DEVICE FOR BOATS

The invention relates to an anti-roll stabilizer device for boats comprising: a container adapted to be mounted on a suspension so as to be able to oscillate around a first axis (X); a mass rotatably supported inside said container so as to form a rotor which rotates around a second axis (Y), transversal with respect to the first axis (X) ; a fluid-filled rotor cooling system comprising: a hollow shaft arranged along the second axis (X) ; a first and a second cooling chambers sealed with respect to the rotor's container and towards the outside, arranged at the ends of the hollow shaft and communicating through the hollow shaft, having the first chamber an inlet and the second chamber an outlet, said inlet and said outlet being connected to a forced circulation circuit so that the cooling fluid can circulate from the first chamber to the second chamber through the hollow shaft and from the second chamber to the first chamber through the circulation circuit.