Abstract: An aerofoil sail (30) for providing motive power to a waterborne vessel, the sail comprising a leading aerofoil portion (35a) and a trailing aerofoil portion (35b), and the sail comprising a spar (32), at least one of the aerofoil portions rotatably positionable, and the sail comprising a controller to control individually the angular position of at least one of the aerofoil portions relative to the spar, and the spar rotationally positionable about its longitudinal axis.

Abstract: A cable tie system has a cable tie member and a cable retaining member. The cable tie member has a base with an inner facing surface and an outer facing surface, a pair of cable tie strips connected to the base and projecting outward from the inner facing surface, and a locking member connected to the base and projecting outward from outer facing surface. The cable retaining member has a retainer housing with a top surface, a bottom surface, a pair of tie strip receiving passageways complimentary to the cable tie strips, a resilient tie strip engaging arm positioned in each tie strip receiving passageway and in releasable contact with one of the cable tie strips when the cable tie strips are positioned in the tie strip receiving passageways, and a release member connected to an end of each resilient tie strip engaging arm.

Abstract: A device (1) for actuating sheets of sailing boats comprises a pulling element (2) for a sheet (200) and an actuator (3) connected to the pulling element (2) for causing the motion thereof. The actuator (3) comprises a screw (4) and a nut (7) engaged with each other, wherein one from the screw (4) and the nut (7) is rotated and the other translates linearly. A boom (300) of a sailing boat (100) provided with the device (1) for actuating sheets of the invention is also described.

Abstract: A sail propulsion system for boats and the like comprises at least one mast (A) and a jib (F) controlled by sheets and secured to the head of the mast (A), as well as at least two mainsails (RS, RD) rove on two shrouds (S; SR) located one to the right and one to the left of the mast (A) and arranged each on a boom (B) mounted on one of said shrouds (S; SR).

Abstract: A device is disclosed for an anchoring system for a boat which permits the user to deploy the anchor from the side or rear of the boat, and for the anchoring point on which the anchor rope acts to travel from the side or rear of the boat to the front of the boat.

Abstract: The invention provides various improved sailboats and methods for their use. In one exemplary embodiment, a sailboat comprises a hull and a deck that is operably attached to the hull. The deck has a longitudinal axis extending along its center. A mast is generally aligned with the longitudinal axis, and a luff cable is coupled to the mast and the deck. The luff cable is movable relative to the longitudinal axis. Further, a foresail is coupled to the luff cable such that at least a portion of the foresail is movable relative to the longitudinal axis upon movement of the luff cable.