Through game theory and establishment of concrete model, this paper argues that both comparative negligence rule and equally divided damages rule are efficient in the field of both to blame collisions, and then compare their efficiency.

以博弈论为工具，通过具体模型的建立，本文论证了在互有过失船舶碰撞中实行平分过失规则和比较过失规则都是有效率的，进而对其效率进行了比较。

Comparative negligence means that the inflictor's liability should be reducedwhen the injur_ed party has contributed to the loss. The rule of Comparativenegligence can be applied while no-fault liability principle is carried out in thecompensation for damages in motorcycle accidents.

过失相抵制度是指加害人依法承担损害赔偿责任的前提下，如果受害人对于损害的发生或扩大也有过失，可以减轻加害人的赔偿责任的一种法律制度。