SPAR BUOY EQUIPPED WITH POSTURE STABILIZER

摘要

SOLUTION: A buoyancy body 2 is provided in the middle of a signpost body 1, the lower end of the signpost body 1 is moored to a sinker 4 in the water bottom by a mooring tool 3, and the buoyancy body 2 is pulled into the water so that a water line is in the middle of the signpost body 1 above the buoyancy body 2. At least two arms 5 and 5 are caused to extend downward obliquely in directions opposed to each other from the signpost body 1 below the buoyancy body 2. An underwater posture stabilizer consisting of an underwater fin 6 is attached to the tip of each arm 5. An aerial posture stabilizer consisting of an aerial fin 8 is eccentrically attached to the vicinity of the upper part of the signpost body 1.EFFECT: An inclination due to wind can be reduced or prevented by the lift force acting on the aerial posture stabilizer consisting of the aerial fin 8. An inclination due to a tidal current can be reduced or prevented by the lift force and the drag acting on the underwater posture stabilizer consisting of the underwater fin 6. Furthermore, rolling and pitching due to ocean waves can be reduced by added mass and damping force acting on the underwater posture stabilizer consisting of the underwater fin 6.SELECTED DRAWING: Figure 1