The novel concept of wave energy recovery by connecting a pair of oscillating wings along-side the ship through coil-springs to realize energy efficient propulsion is proposed. The coupled inter-action between the oscillating wings and the ship under head sea condition is solved in the frequen-cy domain based on potential theory. Wu’s 2D hydrodynamic model is adopted to predict the thrust, lift and rotating moment of the submerged oscillating wing encountering waves, while a coupled heave and pitch model is established to predict ship motion responses. Both models are established in the frequency domain and their coupling is modeled according to the coil-spring mechanics. A sample containership is adopted to study the performance of the proposed concept. The results show that the oscillating wings can effectively recovery wave energy to produce thrust when the vertical motion of the ship is large; moreover, the wings can influence the seakeeping performance of the ship. Two design parameters are investigated, and it is found that the connection position of the wing should be far away from mid-ship, while higher stiffness of the coil spring can lead to larger thrust. Finally, some design suggestions are summarized to improve the performance of the system and to serve as the guidance for carrying out tank experiments.%文章提出了在船体两侧用螺旋弹簧连接振荡水翼进行波浪能回收以实现船舶节能推进的设想。基于势流理论求解了顶浪情况下振荡水翼与船体的频域耦合水动力模型。采用吴耀祖推导出的二维水动力模型来预报水下振荡水翼在波浪中产生的推力、升力和转动力矩；同时用耦合的垂荡和纵摇模型来预报船舶的运动响应。两个模型均是在频域中进行建立，之间的耦合影响根据螺旋弹簧的力学特性加以模拟。以一艘集装箱船为例，对该方案的效果进行了研究。结果表明：当船舶的垂向运动较大时，振荡水翼能有效回收波浪能从而产生推进力；并且，水翼会对船舶的耐波特性产生影响。对水翼相对船体的纵向位置和螺旋弹簧刚度系数两个参数进行了研究，发现水翼连接位置应尽可能远离船中；而更高的刚度系数更有利于水翼产生大的推进力。由此总结出了一些提升系统性能的设计建议以供参考，并为开展水池试验打下基础。
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