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A sail that is fully battened by a plurality of essentially thin, spaced apart battens positioned at a steep angle on the sail. The sail is adapted to be furled around the mast. The battens are stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast

A sail that is fully battened by a plurality of essentially thin, spaced apart battens positioned at a steep angle on the sail. The sail is adapted to be furled around the mast. The battens are stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast. The mast is supported on bearings that allow the mast to turn about the mast's long axis with little friction to permit rapid furling and unfurling of the fully battened sail.

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1. The combination on a sailboat of a mast and a sail that is fully battened, said sail being adapted to be furled around the mast, said battening being stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast, said mast being supported on bearings t

1. The combination on a sailboat of a mast and a sail that is fully battened, said sail being adapted to be furled around the mast, said battening being stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast, said mast being supported on bearings that allow the mast to turn about the mast's long axis with little friction to permit rapid furling and unfurling of the fully battened sail, said battening comprises a plurality of battens which run at a steep angle essentially from the forward edge and the foot to the leech edge of the sail.2. The combination of claim 1 wherein there are three equally spaced apart battens.3. The combination of claim 1 wherein the battens are essentially round in cross-section.4. The combination of claim 1 further including means for rotation of the mast about its long axis whereby the sail is rapidly furled about the mast.5. The combination of claim 4 wherein the means for rotation is pull cord means connecting with said mast whereby the sail is rapidly furled about the mast by pulling on said pull cord means.6. The combination on a sailboat of a mast and sail carried by said mast, the sail being fully battened by a plurality of essentially thin, spaced apart battens positioned at a steep angle on the sail, said battens running essentially from the forward edge and the foot to the leech edge of the sail, said sail being adapted to be furled around the mast, said battens being stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast, said mast being supported on bearings that allow the mast to turn about the mast's long axis with little friction to permit rapid furling and unfurling of the fully battened sail.7. The combination of claim 6 where there are three equally spaced apart battens.8. The combination of claim 6 wherein the battens are essentially round in cross-section.9. The combination on a sailboat of a mast and a sail that is fully battened, said sail being adapted to be furled around the mast, said battening being stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast, said mast being supported on bearings that allow the mast to turn about the mast's long axis with little friction to permit rapid furling and unfurling of the fully battened sail, the lower end of said mast being freely rotatably on a mast base located in the main boat structure, above said mast base, a mast bearing housing within which the mast freely rotates on bearings, said mast bearing housing being laterally supported by an A-frame structure attached to the main boat structure.10. A sail for use on a sailboat and adapted to be carried by a mast, said sail being fully battened, said sail being adapted to be furled around the mast, said battening being stiff enough to support a large roach of a square top sail and yet flexible enough to wrap around the mast, said battening comprising a plurality of battens which run at a steep angle essentially from the forward edge and the foot to the leech edge of the sail.11. The sail of claim 10 wherein said sail is fully battened by a plurality of essentially thin, spaced apart battens positioned at a steep angle on the sail.12. The sail of claim 10 wherein there are three equally spaced apart battens.13. The sail of claim 10 wherein the battens are essentially round in cross-section.