One side ,the unreasonable marshaling may result in the longer waiting time of the port ships, and it may result in the lower efficiency of the tugboat, accordingly waste the port resources.

• 拖轮配置的不合理，一方面可能造成港口船舶等待时间加长，另一方面可能造成拖轮利用率低，造成港口资源的浪费。