estimated performance speed

In references to the log speed vector is defined mistakenly on the leeway track,and therefore the method of dead reckoning provided in wind and current is mistaken too.

在［１］～［４］中，都错误地将计程仪船速矢量定义在风中航迹线上，因而，在此基础上提出的有风有流情况下的航迹推算方法也是错误的。

Methods of the ship model self-propulsion test in regular waves,the data processing and expression of the frequency response curves of self-propulsion factors in the regular waves,the spectrum analysis statistics prediction of power in irregular waves and the prediction of ship speed loss in irregular waves are described.

阐述了船模规则波自航试验的方法、规则波中自航因子频率响应曲线的数据整理和表达方法、不规则波中收到功率的谱分析统计预报方法,并给出了不规则波中船舶的失速预报方法。