Prepare for the ARPA and Radar Operation Test. Enhance your skills with multiple choice questions, detailed explanations, and real-time simulations. Ensure maritime safety with confidence!

Multiple Choice

What is a RADAR display called where the orientation is fixed so that North is always at the top?

Keeping geographic north at the top defines a North-Up display. This orientation makes the radar image align with charts that also have north at the top, so fixed features on the ground line up consistently as you view the screen. Stabilized describes keeping the image steady with respect to the vessel’s motion (counteracting roll and pitch), but that doesn’t inherently fix north at the top—the top of the screen can still rotate with the ship’s heading depending on the system configuration. The other terms refer to how targets move on the screen relative to your own ship (true motion vs relative motion) and don’t specify a fixed north orientation.

Keeping geographic north at the top defines a North-Up display. This orientation makes the radar image align with charts that also have north at the top, so fixed features on the ground line up consistently as you view the screen.

Stabilized describes keeping the image steady with respect to the vessel’s motion (counteracting roll and pitch), but that doesn’t inherently fix north at the top—the top of the screen can still rotate with the ship’s heading depending on the system configuration. The other terms refer to how targets move on the screen relative to your own ship (true motion vs relative motion) and don’t specify a fixed north orientation.