Method for predicting at least one movement of a ship under the effect of the waves

摘要

The method consists of: A step of estimating a direction (D) of propagation of the swell and a propagation speed of the swell, a step of measuring the development of a characteristic value of the swell at at least one measuring point (P) upstream of the ship in the direction of propagation (D) by periodically measuring the value, a step of detecting a lull in the swell at the measuring point (P) using a measurement of the development of the characteristic value, including a measurement of a duration of a lull detected, and if a lull in the swell is detected at the measuring point (P): a step of calculating a time interval between the detection of the lull in the swell at the detected measurement point (P) and a moment in which the lull affects the movement of the ship (N), carried out, in particular, depending on the estimated speed of propagation of the swell.

主权项

1. A method for executing a naval operation on a ship under the effect of a swell on an area of water, the swell comprising a peak and a lull, the method comprising:
estimating a direction of propagation of the swell, and estimating a propagation speed of the swell in the direction of propagation, measuring the development of a characteristic value of the swell at at least one measurement point upstream of the ship in the direction of propagation by periodically measuring the characteristic value, identifying the presence of the lull in the swell at the measuring point using a measurement of the development of the characteristic value, including a measurement of a duration of the lull, calculating a time interval between the detection of the lull in the swell at the measurement point and a moment in which the lull is expected to reach the ship and affect the movement of the ship based on the estimated propagation speed of the swell, and carrying out the naval operation at the end of time interval when the lull affects the movement of the ship.