Study of the Wave Devouring Propulsion System in the directional waves

吞噬波浪推进系统（WDPS）是将波浪能直接转化为推力的装置之一。该系统由船体和水下箔组成。水翼产生的阻尼力预计会减少波浪中的船体运动。而且，波浪中阻力增加，水翼推力可以在波浪中使用。带有两个箔片的新型 WDPS 模型在波浪池中进行了设计和测试。研究了WDPS在定向波中的特性。从这些实验来看，横波海况下的前进速度比迎头海况下的前进速度更快。从这些结果来看，WDPS 即使在定向波中也具有广泛的适用性。

The wave Devouring Propulsion System (WDPS) is one of devices which converts the wave energy directly into thrust. The system consists of hull and underwater foil. The damping force generated by the foil expects hull motion reduction in waves. Moreover, resistance increases in waves reduced and the foil thrust can use in waves. The new WDPS model with two foils was designed and tested in wave tank. The characteristics of the WDPS in the directional waves were studied. From these experiments, the advancement speed in beam sea condition becomes faster than head sea condition. From these results, widely applicability of WDPS even in the directional waves proved.