Ocean - Cpa Method.pdf

Recent research, such as that found on ScienceDirect and ResearchGate , suggests improving basic CPA by:

Incorporating Rate of Turn (ROT) and Change of Speed (COS) into AIS-based predictions for more accurate results during maneuvers. Ocean CPA method.pdf

): The vector difference between the own ship’s velocity and the target's velocity. Recent research, such as that found on ScienceDirect

The direction of the target's movement relative to the own ship. The is the estimated position where the distance

The is the estimated position where the distance between two ships (the "own ship" and a "target vessel") reaches its absolute minimum. It is the primary metric used by Watchkeeping Officers to assess the Risk of Collision (ROC) . If the CPA is too small, a collision is possible, requiring immediate maneuvering according to COLREGs . 2. Core Parameters The method relies on two primary mathematical outputs: