| 摘要 |
A device for allowing the base of the mast of a multihull sailcraft to be positioned leeward of the top of the mast. It comprises a mast, shroud lines, an arced track whose radius centers at the shroud line attachment to the mast, apparatus for regulating the travel of the base of the mast along the arced track, apparatus for reducing travel friction between the base of the mast and the arced track, and apparatus for allowing the arced track to be rotated around its central vertical axis and locked in position.
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