On the basis of establishing the leeway motion model, the laws of the motion are studied and the strategy on ship off-course correction is discussed by using reasonable rudder Angle timely.
在建立船舶偏航运动模型的基础上，对偏航运动规律进行分析，提出适时合理地采用舵角进行偏航控制的策略。
2
To ensure the vessel voyage along the predetermined course, the rudder Angle should be changed reasonably at the right moment according to the various leeway circumstances.
为使船舶沿预定的航向航行，应根据船舶偏离航向的情况适时合理地改变舵角以修正航向。
3
According to the obvious difference of yaw-bias in different voyage calibrations, the result of analysis shows that the leeway and drift Angle is the primary reason.