Abstract

To assess the risk of ship collision, especially the real-time risk, has played a more and more important role in the field of automatic collision avoidance, Intelligent Navigation System, and Decision-making Support for vessel traffic management in port and waterways. Based on fuzzy logic method, the authors introduce the membership function of the collision factors of Distance to Closest Point of Approach (DCPA), Time to Closest Point of Approach (TCPA) and encounter angle by using AIS(automatic identification system) data. Combined with the risk model of SAMSON (Safety Assessment Model for Shipping and Offshore on the North Sea), the basic calculation can be improved into dynamic risk assessment. The method can be used for discriminating the risk of ship collision and benefit maritime operation services.

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