RIG STRUCTURE OF YACHT

PURPOSE: To enable sailing without largely inclining the hull by installing a weight in a lower end part of an almost vertical support shaft to support a mast on which a sail and a boom are installed on the center of the hull, and supporting the support shaft around a longitudinal directional support arm of the hull by an upper deck so as to be capable of swinging. CONSTITUTION: A support shaft 7 and a mast 5 are put in a vertical posture, and a hydraulic cylinder is put in an unoperated condition, and the hull 10 is sailed, and when a sail 6 receives a wind, the sail 6 and the mast 5 incline, but since the hull hardly inclines, it can sail in a stable posture, and a crew can also keep an ordinary posture. If the hydraulic cylinder is actuated in a vertical condition, when the sail 6 receives a wind in a condition of being braked by sandwiching a guide rail 9, the hull 10 also inclines according to an inclination of the mast 5. On the other hand, braking by the hydraulic cylinder is not performed, the support shaft 7 swings around a support arm 70 by tilting of the mast 5, and inclines according to an inclination of the mast 5, and a height of the sail 6 lowers by H.