中文摘要：

采用基于三维时域Rankine源方法的水动力分析软件Wasim，对某小水线面双体科考船在不同航速、不同海况与不同浪向下的耐波性进行了计算与分析，重点对不同工况下小水线面双体船横摇、纵摇和垂荡性能进行了研究。研究表明：无航速时，横摇有义单幅值极大值出现在90°浪向，纵摇极大值出现在0°与180°浪向；较高航速时，横摇响应最大单幅值出现在60°与90°浪向，纵摇在30°，150°和180°浪向时明显较大；波浪对连接桥的砰击会显著影响SWATH船的运动响应，使垂荡运动幅值显著增大；随航速的提高，顺浪航行下纵摇运动幅值逐渐减小。

英文摘要：

Hydrodynamic analysis software Wasim based on Rankine source method is applied to research on the seakeeping performance of a SWATH research ship for different speeds , sea conditions and wave directions .The roll, pitch and heave response characteristics of the SWATH research ship are studied in this paper .It is demon-strated that when the ship is at zero speed , maximum significant single amplitude of roll appears in 90°wave di-rection and minimum significant single amplitude of pitch appears in 0° 180°wave directions.When the SWATH ship is at high speed , maximum roll motion responses appears in 60 °90 °wave directions .Pitch mo-tion responses is larger in 30 °, 150 °and 180 °wave directions .Motion responses of SWATH could be significant-ly affected by slamming load on cross-structure and it makes heave response become larger .As the speed is in-creased , significant single amplitude of pitch is reduced gradually in 0 °wave direction .