概率应该为零的事情，竟然发生了。军舰和货船都可以主动避碰，或者通知对方避让；另外，卫星定位系统在发现前方位置有物体时，也可以给出措施；甚至船东的自动跟踪系统，也是可以保障安全的……

English:

The things should probability is zero, but happened it. The warship and cargo ship all can active avoidance,, or notify the other party avoidance; otherwise satellite positioning system can give the measure when it finds any object in front of; even the shipowner's automatic tracking system, also it can assure the safety…