| 摘要 |
<P>PROBLEM TO BE SOLVED: To control rocking in the yaw direction of a spar type floating body. <P>SOLUTION: A tunnel-shaped flow passage 11 penetrating in the horizontal direction is provided on an outer peripheral part of a buoyant body 2 of a spar type floating body 1, and its one-end side opening forms a first water jetting port 6 for jetting a water flow in a direction for imparting a turning force clockwise in a plan view with respect to the buoyant body 2, and the other end opening forms a second water jetting port 7 for jetting a water flow in a direction for imparting a turning force counterclockwise in a plan view with respect to the buoyant body 2. A thruster 8 is provided in the tunnel-shaped flow passage 11. There are provided a yaw motion detecting sensor 9 for detecting the yaw motion of the buoyant body 2, and a controller 10 for giving a command to the thruster 8 based on a signal. When the yaw motion of the spar type floating body 1 is detected by the yaw motion detecting sensor 9, the thruster 8 is started by the controller 10, the water flow is jetted in the direction for imparting the turning force in a direction for canceling the yaw motion by the water jetting port 6 or 7, and the yaw motion generated in the spar type floating body 1 is controlled thereby. <P>COPYRIGHT: (C)2013,JPO&INPIT |
