NAV-RADAR-L2.1

Relative motion plotting: the worked triangle

NAV-RADAR-M2 · Collision avoidance with radar and ARPA · NAV-RADAR-M2-A Plotting, CPA and TCPA, automatic tracking and Rule 19.

Before trusting ARPA, you must be able to do what it does. From two or three ranges and bearings, construct the **relative motion line**, find **CPA** and **TCPA**, and recover the target's **true course and speed**.

Independent study. xplor is not an accredited training provider and awards no certificate or Certificate of Competency. The MCA radar, ARPA and NAEST requirements can only be met by completing the approved simulator-based courses and examinations at an MCA-approved training provider. AI-drafted content pending subject-matter-expert review.