Simulation-based assessment of ship collision avoidance options

Ship safety domains have been widely studied in the context of ship collision risk and collision avoidance. Various mathematical models have been proposed, as well as empirical (mostly AIS data-based) and expert-based models. With increasing interest in developments towards autonomous vessels, ship domain models have evolved to become dynamic, adjusting to factors such as maneuverability, speed, traffic density, and navigational environment. This paper investigates the relationship between collision avoidance options and ship safety domains through a simulation-based approach. Collision probabilities are estimated for target ship locations around the own ship when various rudder angles are applied to the own ship. These probabilities serve as an indicator of the availability of collision-avoidance options. The resulting spatial representation of collision-avoidance options is then compared with an AIS-based ship safety domain reported in literature.

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