Available-Maneuvering-Margins-Based Ship Collision Alert System

The timing of a ship taking evasive maneuvers is crucial for the success collision avoidance, which affected by perceived risk navigator. Therefore, we propose alert system (CAS) based on navigator to trigger ship’s in timely manner avoid close-quarters situations. available maneuvering margins (AMM) with stability guarantees are selected as proxy reflect navigator; hence, proposed CAS referred an AMM-based CAS. Considering dynamic nature operations, non-linear velocity obstacle method utilized identify presence further activate this AMM measured maneuverability and models, degree they violate risk-perception-based domain determines level alert. Several typical encounter scenarios from AIS data demonstrate feasibility promising results suggest that applicable both pair multi-vessel scenarios. Collision can be accurately detected, then consistent severity issued. This has potential assist autonomous ships understanding situation determining maneuvers. advantages limitation discussed.