So the author believes that the model could be useful to the port monitors, sea-route administers, commanders of the shipping companies and VTS and also seamen for its practical value.

• 该项研究可为港口监督人员、航道管理人员、船公司指挥人员、VTS指挥人员和船舶驾驶员提供一定的科学依据,具有一定的实用价值。