IMO requires ARPA to operate in relative motion with which display types?

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Multiple Choice

IMO requires ARPA to operate in relative motion with which display types?

The main idea being tested is how ARPA tracks are presented relative to your own ship, regardless of how the radar display is oriented. Relative motion means the own ship is the reference point on the screen, and targets move around it as they would in real space. This tracking approach is independent of display orientation, so operators can choose north-up, head-up, or course-Up without affecting how ARPA plots and updates target tracks. Why this matters: ARPA’s purpose is to monitor and predict target motion from the perspective of your own vessel. Whether the screen is oriented to true north, your heading, or your course, the ARPA calculations and target plots remain centered on the vessel. That flexibility—to work in relative motion while using any of those display orientations—lets mariners choose the most comfortable or informational view without compromising tracking accuracy. So the best choice is that ARPA operates in relative motion with any of the three display orientations—north-up, head-up, or course-Up.

The main idea being tested is how ARPA tracks are presented relative to your own ship, regardless of how the radar display is oriented. Relative motion means the own ship is the reference point on the screen, and targets move around it as they would in real space. This tracking approach is independent of display orientation, so operators can choose north-up, head-up, or course-Up without affecting how ARPA plots and updates target tracks.

Why this matters: ARPA’s purpose is to monitor and predict target motion from the perspective of your own vessel. Whether the screen is oriented to true north, your heading, or your course, the ARPA calculations and target plots remain centered on the vessel. That flexibility—to work in relative motion while using any of those display orientations—lets mariners choose the most comfortable or informational view without compromising tracking accuracy.

So the best choice is that ARPA operates in relative motion with any of the three display orientations—north-up, head-up, or course-Up.

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