What is the function of a guard zone?

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Multiple Choice

What is the function of a guard zone?

A guard zone creates a proximity alert area around your vessel, so the system automatically warns you when any target enters that defined region. This immediate alarm gives you early notice of potential collision or close approaches, letting you take timely action. It’s a monitoring boundary, not a way to change how far the radar can see or to filter weather returns. The other options describe actions the guard zone doesn’t perform—reducing radar range or filtering weather—whereas the defining function is the alert when targets come inside the zone.

A guard zone creates a proximity alert area around your vessel, so the system automatically warns you when any target enters that defined region. This immediate alarm gives you early notice of potential collision or close approaches, letting you take timely action. It’s a monitoring boundary, not a way to change how far the radar can see or to filter weather returns. The other options describe actions the guard zone doesn’t perform—reducing radar range or filtering weather—whereas the defining function is the alert when targets come inside the zone.

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