Patent ID: 8096255

Claim:
A ship, with a displacement speed between 10 and 25 knots or a cruising speed between 18 and 45 km/h and a Foude number which does not exceed 0.28, a stern of which is equipped with a device for deflecting flows of water, comprising several deflector members ( 1 ) having a submerged lower face ( 2 ), called first face, fitting overall into an extension of the hull bottom (FC), toward the rear thereof, while forming an angle (α) in relation to a general plane (Δ) tangent to this bottom (FC), each of these deflector members ( 1 ) being articulated to the hull, control means making it possible to cause it to pivot in one direction or the other in order to cause said angle (α) to vary, characterized by the fact that, on one hand, these deflector members ( 1 ) are similar and juxtaposed such that they extend transversely side by side, over all, or nearly all, the width of the stern, each of them consisting of a case with a rear face or second face ( 3 ), also at least partially submerged, able to be lowered by increasing said angle (α), so as to form an approximately vertical wall opposing slamming by rear surge, and that, on the other hand, said means for controlling the pivoting of each deflector member ( 1 ) comprise at least one hydraulic jack ( 4 ), the body ( 42 ) of which is housed in a protective case ( 43 ) integral with the structure of the hull and the rod ( 41 ) of which is inserted between the rear portion of the hull and the case ( 1 ) for which it controls the pivoting, such that this jack is sheltered from the surge and waves.