Ship collision avoidance decision model and simulation based on collision circle

Abstract

In order to give consideration to both comprehensive evaluation and efficient decision‐making in collision avoidance decision‐making process, a collision avoidance decision‐making model based on collision circle is proposed by introducing the concept of collision circle. Firstly, the factors causing ship collision are analyzed. Secondly, the static and dynamic characteristics of collision circles are analyzed and summarized by using collision circle simulation cases. Thirdly, based on the static characteristics, a reasonably distributed collision avoidance decision model of (Possible Point of Collision, PPC) was established. Finally, the spatial data operations core algorithm (Java Topology Suite, JTS) is used for logical operation and visualization, so as to realize the ship collision avoidance evaluation and decision. The decision model was used to verify the accident scenario of ʺSANCHIʺ, and the results showed that the obtained collision avoidance scheme was reasonable and in line with the ʺInternational Regulations for Preventing Collisions at Seaʺ and safety requirements, thus providing a reference for maritime operators to avoid collisions between ships.