Patent ID: 7350474

Claim:
A sailing device suitable for use in a pleasure boat, comprising: a sail portion composed of a backbone, a pair of left and right spars extending obliquely backward from the fore end of the backbone and a sail-cloth attached at the fore edge thereof to the pair of left and right spars and at the aft end thereof to the aft end of the backbone; and a strut capable of being hinged at the upper end thereof to the fore end of the backbone to be movable between a position extending downward from the fore end of the backbone and a position along the backbone, the lower end of said strut being directly mounted on the boat hull or indirectly attached to the boat hull by support of a user to permit rise and fall movement of the strut, wherein said sail portion has left and right wing sections each provided with a dihedral angle, wherein said left and right spars are connected to each other at their intermediate portions by means of an upper tension rope, and wherein said left and right spars are connected at their intermediate portions to an intermediate portion of said strut by means of left and right tension ropes.