WAVE HEIGHT AND WAVE DIRECTION ESTIMATING METHOD OF INCIDENT WAVE, AUTOMATIC NAVIGATION ROUTE AND/OR SHIP POSITION HOLDING CONTROLLING METHOD, AUTOMATIC NAVIGATION ROUTE AND/OR SHIP POSITION HOLDING CONTROLLING SYSTEM, AND SHIP AND OFFSHORE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a wave height and wave direction estimating method of an incident wave, accurately estimating wave height and wave direction of the incident wave, in a state where an automatic navigation route holding control for holding navigation route on an instructed navigation route and/or a ship position holding control for holding a hull at an instructed position are/is being carried out.;SOLUTION: Pitch movement and yaw movement of a hull movement are measured S101. From the period, amplitude ratio, and phase difference of the measured pitch movement and yaw movement, the wave direction of an incident wave is estimated based on preestablished data D1 showing the relation between the period, amplitude ratio, and phase difference of pitch movement and yaw movement S106. The wave height of the incident wave is estimated from the measured pitch movement and estimated wave direction S108.;COPYRIGHT: (C)2012,JPO&INPIT