Abstract: A system for preventing the deformation of sails, such as jibs, which are mounted on reels. The inventive system includes elements (14; 20) which are designed to produce a complementary volume at the centre of the reel. The sail which is mounted on the reel cannot be deformed by compression around the reel and parallel to the hoist thereof. The sail is made from a fabric having transverse and longitudinal fibres (18, 18?), which is resistant to compression and to local buckling. The fabric is disposed between two films (17, 17?) of tight weave fabric and the assembly is subsequently glued.

Abstract: A carbon mast includes a tube which is made from, for example, a pre-impregnated material and which is produced by filament winding or pultrusion. The tube (1) remains sealed by gluing the pieces for attaching the different elements that equip the mast thereto, in particular, the mast head piece (15) , the fitting (16) for attaching the spinnaker, the fitting (17) for attaching the stay and shrouds, the fitting (18) for attaching the crosstrees, the fitting (19) for attaching the boom and the fittings (20, 21) for, respectively, the mast partner and the mast foot, the aforementioned fittings being made in such a way as to contribute to the sealing of the mast.

Abstract: A propulsion system for crafts and ships, notably sailing ships, includes at least one flexible or rigid sail, to which are attached one or several foils, eventually provided with small floats, whereby the foils can be eventually articulated relative to the sail, so that the pair constituted by the sail and the foils forms a unitary block which allows cancelling a capsizing torque acting on the craft.

Abstract: A propulsion system for crafts and ships, notably sailing ships, includes at least one flexible or rigid sail, to which are attached one or several foils, eventually provided with small floats, whereby the foils can be eventually articulated relative to the sail, so that the pair constituted by the sail and the foils forms a unitary block which allows cancelling a capsizing torque acting on the craft.