What is the function of radar in restricted visibility operations?

• A. To detect, track, and forecast hazards, enabling safe passage and collision avoidance.
• B. To map the seabed.
• C. To calibrate the autopilot.
• D. To measure wind speed.

Answer: (A)

Radar in restricted visibility operations is used to detect, track, and forecast hazards, enabling safe passage and collision avoidance. When visibility is poor, radar provides a picture of other vessels, landmasses, and fixed objects by measuring range and bearing and then tracking their movement over time. This allows you to estimate relative speed and direction, predict potential collision points, and determine appropriate course or speed adjustments to keep safely clear. Other functions mentioned—mapping the seabed, calibrating the autopilot, or measuring wind speed—are handled by different systems (sonar for seabed mapping, autopilot sensors, and anemometers for wind), not radar.