Abstract
Recently, ship collision avoidance has become essential due to the emergence of special vessels like chemical tankers and VLCCs (very large crude carriers), etc. The information needed for safe navigation is obtained by combining electrical equipment with real-time visual information. However, misjudgements and human errors are the major cause of ship collisions according to research data. The decision support system of Collision avoidance is an advantageous facility to make up for this. Collision risk evaluation is one of the most important problems in collision avoidance decision supporting system. A review is presented of different approaches to evaluate the collision risk in maritime transportation. In such a context, the basic concepts and definitions of collision risk and their evaluation are described. The review focuses on three categories of numerical models of collision risk calculation: methods based on traffic flow theory, ship domain and methods based on dCPA and tCPA.
Highlights
In the recent twenty years, with the emergence of new types and large ships, the density of traffic at sea has seen a great change and has become more and more complex
The review focuses on three categories of numerical models of collision risk calculation: methods based on traffic flow theory, ship domain and methods based on dCPA and tCPA
This study provides an understanding about the collision risk evaluation and the theoretical background of the related work
Summary
In the recent twenty years, with the emergence of new types and large ships, the density of traffic at sea has seen a great change and has become more and more complex. The quantification of collision risk evaluation has experienced several stages: (1) The first stage is based on the traffic flow theory. Are used to assess the collision risk of special water area These methods are almost based on statistics and traffic investigation. The intelligent technologies are used to evaluate the collision risk, including the improvement of traditional methods and new ways of presentation.
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