Embodiments described herein relate generally to a sailing vessel that can substantially obviate the heeling problem experienced by classical sailboats. During navigation, the sailing vessel is driven forward by an aerodynamic force exerted by wind on the sail, and balanced by a hydrodynamic force exerted by water on a float on the stern of the sailing vessel, the aerodynamic force and the hydrodynamic force being parallel or substantially parallel to a longitudinal axis of the sailing vessel.

The present invention refers to a hybrid vessel with a ballast system in which the position of the cabin (102) is changed vertically, from emerged to submerged and vice versa, according to the decision of its operator. Thus, the present invention describes a hybrid vessel with ballast water system comprising at least one cabin (102) and at least one main tank (101) of ballast water, and the tank (101) is connected directly to the CAB (102) or partially above the water level.

The invention relates to a personal watercraft (100) having a longitudinal axis (X) and comprising: a chassis (102), two rear floats (106) mounted at the rear of the chassis (102) on either side of a symmetry plane of the personal watercraft (100), a foil (116) mounted between the rear floats (106); a movable assembly (150) comprising: a suspension arm (108) that extends in front of the chassis (102), one of the ends of which is mounted so as to be able to rotate on the chassis (102) about a first rotation axis (10), a front float (104) mounted at the other end of said suspension arm (108), and a propulsion means (112) housed in the front float (104),

the personal watercraft (100) further comprising a suspension system (114) disposed between the chassis (102) and the movable assembly (150).

A damping system is presented for damping an oscillation of a load on a fluctuant water surface. The damping system may include four buoyancy systems, two on each side of the load. Each buoyancy system may include two buoys, a lower frame and an upper frame.

Embodiments described herein relate generally to a sailing vessel that can substantially obviate the heeling problem experienced by classical sailboats. During navigation, the sailing vessel is driven forward by an aerodynamic force exerted by wind on the sail, and balanced by a hydrodynamic force exerted by water on a float on the stern of the sailing vessel, the aerodynamic force and the hydrodynamic force being parallel or substantially parallel to a longitudinal axis of the sailing vessel.

The present invention refers to a hybrid vessel with a ballast system in which the position of the cabin (102) is changed vertically, from emerged to submerged and vice versa, according to the decision of its operator.

Thus, the present invention describes a hybrid vessel with ballast water system comprising at least one cabin (102) and at least one main tank (101) of ballast water, and the tank (101) is connected directly to the CAB (102) or partially above the water level.

Embodiments described herein relate generally to a sailing vessel that can substantially obviate the heeling problem experienced by classical sailboats. During navigation, the sailing vessel is driven forward by an aerodynamic force exerted by wind on the sail, and balanced by a hydrodynamic force exerted by water on a float on the stern of the sailing vessel, the aerodynamic force and the hydrodynamic force being parallel or substantially parallel to a longitudinal axis of the sailing vessel.

Embodiments described herein relate generally to a sailing vessel that can substantially obviate the heeling problem experienced by classical sailboats. During navigation, the sailing vessel is driven forward by an aerodynamic force exerted by wind on the sail, and balanced by a hydrodynamic force exerted by water on a float on the stern of the sailing vessel, the aerodynamic force and the hydrodynamic force being parallel or substantially parallel to a longitudinal axis of the sailing vessel.

A damping system is presented for damping an oscillation of a load on a fluctuant water surface. The damping system may include four buoyancy systems, two on each side of the load. Each buoyancy system may include two buoys, a lower frame and an upper frame.

The invention relates to a personal watercraft (100) having a longitudinal axis (X) and comprising: a chassis (102), two rear floats (106) mounted at the rear of the chassis (102) on either side of a symmetry plane of the personal watercraft (100), a foil (116) mounted between the rear floats (106); a movable assembly (150) comprising: a suspension arm (108) that extends in front of the chassis (102), one of the ends of which is mounted so as to be able to rotate on the chassis (102) about a first rotation axis (10), a front float (104) mounted at the other end of said suspension arm (108), and a propulsion means (112) housed in the front float (104), the personal watercraft (100) further comprising a suspension system (114) disposed between the chassis (102) and the movable assembly (150).