TILT SAIL BOAT

摘要

A novel rigging for a sailboat in which the mainsail (32) is mounted between a luff boom (52) and a foot boom (30), the luff boom being attached to the top of the mast (50) by a fitting (54) that allows rotation at least about a vertical axis parallel to the mast and about a tilt axis normal to the mast such that the luff boom can tilt out of the vertical. The fitting is joined to the luff boom at a pivot point above the center of effort of the sail, and not necessarily at its head. A tack sheet (56) and a clew sheet (48) restrict the tilt of the luff boom and its rotation around the mast. A jib sail (110), too, may be tiltably mounted by attaching it to a luff boom (118) which is suspended at its head from a high point on the mast. The mast may be retractable or extendable and either luff boom may be given a stream-lined cross section.