The new pushboat proposed is very much different from that with a conventional cochlea-channeled-stern and it is fitted with forward rudders + ducted propellers + backing rudders system.

• 对蜗尾型双桨推轮首次进行了线型研究和模型试验研究,给出了一种与常规蜗尾有很大差别、与正车舵+导管桨+倒车舵系统有良好匹配性能的新的蜗尾型推轮。