针对波浪中的舰船摇荡运动难以用微分方程进行描述的矛盾,提出了通过实船试验获取摇荡时历进而分析其机理的方法.详细介绍了舰船摇荡运动数据采集的设备、方法和步骤.对实测数据进行的定性分析和定量计算表明,所采集的实船摇荡时历是混沌时间序列,表明实际非规则波中的舰船摇荡运动具有混沌特性. Aiming at the contradiction between that the wave motion of the ship is hard to describe by the differential equation, a method of obtaining the swaying time by the real ship experiment and analyzing its mechanism is presented. The equipment, method and steps of the ship swaying motion data collection are introduced in detail. Qualitative analysis and quantitative calculation of the measured data show that the real ship swaying time history is a chaotic time series, indicating that the chaotic characteristics of the ship swaying motion in the actual irregular wave.