A device intended to vary the water of a ship and to allow the oscillation of the keel in order to increase the straightening torque.

摘要

The short keel well (1) is articulated to the passage of the hull by ball joints (2) and receives the keel (3) carrying the ballast (4). Tipping of the keel is obtained by hydraulic actuators (6). Raising of the keel by hydraulic actuators (10) is obtained by vertical sliding of the keel through the movable well.