| 摘要 |
A sailboard rig has a mast and a boom running aft from the mast for holding and moving the sail. The boom is more specially in the form of a wishbone boom with the sail in its opening. The mast has a mast foot joint such that it may be turned and heeled over on the board. The sail is joined to the mast at its luff and the aft end of the boom is joined with an aft limit of the sail. In order to make possible better use of the wind and for increasing the top speed of the rig, the sail is made up of a lower panel and two upper panels and the mast is branched so as to have two upper arms spreading outwards towards leeches of the two upper panels of the sail. These upper panels are joined with the lower sail panel at a seam and are joined to the mast arms along luffs so that all in all there is a generally Y-like mast and a sail with a Y-like form of luff.
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