What is the primary purpose of the alarm panel's color-coding on the ARPA display?

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Multiple Choice

What is the primary purpose of the alarm panel's color-coding on the ARPA display?

The alarm panel’s color-coding on the ARPA display is designed to convey how dangerous a tracked target is so you can act quickly. By using different colors for targets based on their predicted risk (for example, a red or bright color for imminent or high-threat targets), the system helps you spot the most dangerous situations at a glance and prioritize avoidance maneuvers. This relies on trajectory information like closest point of approach and time to CPA to determine the threat level, not on weather, crew messages, or depth indicators. Weather appears on separate weather displays, crew messages are shown as text or alerts in other systems, and depth comes from the echo sounder — none are indicated by ARPA alarm colors.

The alarm panel’s color-coding on the ARPA display is designed to convey how dangerous a tracked target is so you can act quickly. By using different colors for targets based on their predicted risk (for example, a red or bright color for imminent or high-threat targets), the system helps you spot the most dangerous situations at a glance and prioritize avoidance maneuvers. This relies on trajectory information like closest point of approach and time to CPA to determine the threat level, not on weather, crew messages, or depth indicators. Weather appears on separate weather displays, crew messages are shown as text or alerts in other systems, and depth comes from the echo sounder — none are indicated by ARPA alarm colors.

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