| 摘要 |
PURPOSE:To make possible the exact maintenance of an intended course of navigation by predicting the ocean wave, wind direction and wind speed from a meteorological map and weather forecast data, calculating the influence quantity of the disturbance together with the tidal current data, subjecting an autopilot to feed-forward control and displaying the course on an electronic marine chart. CONSTITUTION:A calculation unit 9 for the extent of the movement of a ship hull (drift power against wave) is inputted with the signal from a calculation unit 7 for predicting the ocean wave, the signal from a draft gate 21 and a hull methematical model (drift power against wave) 12. A calculation unit 10 for the extent of the movement of the hull (pressure against wind) is inputted with the signal from the gage 21, the signal from a calculation unit 8 for predicting the wind direction and wind speed and the signal from a hull methematical model (pressure against wind) 14. A calculation unit 11 for the extent of the movement of the hull (against tidal current) is inputted with the actually measured tidal current value from a tidal current meter 3 and the signal from a storage device 16 for the statistical value of the tidal current data. A calculation unit 17 for the influence quantity of the disturbance is inputted with the signals from the units 9-11.
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