A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies-simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.

A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies-simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.

A sailing vessel is disclosed which comprises a hull, a keel depending from the hull and a mast. A ballast bulb is provided at the lower end of the keel. A first control mechanisms is provided for rotating the ballast bulb about a transverse axis to change the angle of attack of the bulb. A second control mechanism is provided for rotating the bulb about a longitudinal axis of the vessel.

A sailing vessel is disclosed which comprises a hull, a keel depending from the hull and a mast. A ballast bulb is provided at the lower end of the keel. A first control mechanisms is provided for rotating the ballast bulb about a transverse axis to change the angle of attack of the bulb. A second control mechanism is provided for rotating the bulb about a longitudinal axis of the vessel.

A fin intended for a navigation object, in particular an inflatable or rigid-shell water board, including a wing which is able to move with respect to a fastening base about an axis of rotation between a first stabilizing position and a second folded position, and a rotation blocking element for blocking the wing in the folded position, the axis of rotation being borne by two hinge components, one of which is fastened to the wing and the other to the fastening base, the hinge component fastened to the wing also being able to move translationally with respect to the hinge component fastened to the fastening base in order to unblock the wing.

A sailing vessel is disclosed which comprises a hull, a keel depending from the hull and a mast. A ballast bulb is provided at the lower end of the keel. A first control mechanisms is provided for rotating the ballast bulb about a transverse axis to change the angle of attack of the bulb. A second control mechanism is provided for rotating the bulb about a longitudinal axis of the vessel.

A sailing yacht (I) comprising a hull (S) and two drift blades (1,1) coupled to said hull (S), each of said drift blades (1,1) being fixed pivoted to said hull (S) in a symmetrical position with respect to the other blade (1, 1) from opposite side with respect to the longitudinal axis (X) of said hull (S) for rotating independently relative to the other blade (1,1) about a rotation axis (Y,Y) not necessarily parallel to said longitudinal axis (X), and around a rotation vertical axis (R, R) so as to modify the angle of incidence with respect to the flow line of the water, with the possibility when sailing of having ballast (Z,Z) positioned in various positions dynamically modified: each ballast (Z, Z) attached to the respective blade (1,1) and separated; both ballasts (Z, Z) attached to one drift blade (1); both ballasts (Z, Z) attached to the other drift blade (1); both ballasts (Z, Z) attached to said two drift blades (1, 1) and joined.

A sail boat propulsion and stabilisation system. The system uses a device to substantially increase the performance of sail or motor boats by reducing the displacement to increase speed and comfort during sailing, due to its light weight and dynamics. The system comprises a control panel connected to a hydraulic group which actuates the device. The device is provided with a keel wing and a counterbalance or lift wing joined by a bulb, a cylindrical actuator for the counterbalance and lift wing, a hydraulic rotary actuator for hoisting the assembly, an articulation shaft, and a tilting shaft for the assembly which is coupled to the broadside or to the mounting base beside sensors of the angle of attack of the counterbalance wing. The hydraulic group and the cylindrical hydraulic actuator are optionally replaced by a cylindrical electric actuator connected to the control panel and acting upon the counterbalance wing.

An apparatus and method for control of at least one of a plurality of semiautonomous marine vessels are provided. The system includes a control station with a communications system for network communication with marine vessels, and provides diagnostics and control for control and monitoring of the marine vessels, according to a mission plan.

A device for simultaneously and progressively varying the camber and the angle of attack of a hydrodynamic and aerodynamic profile of a wing, the latter being able to adopt multiple positions including a position at rest, the said profile at rest being in a plane, the device having a wing with a profile having a leading edge at the front and a trailing edge at the rear, a seat arranged in the upper part of the profile of the wing connected at one of its ends to the front upper part of the profile by a first pivot, and at its other end to a lever by a connection point, a lever connected to the rear upper part of the profile by a second pivot, and that at rest, a seat and at least one lever are aligned or substantially aligned along the same axis and are included in the same plane as the profile.