Question 864Navigation General

The correct answer is A) Navigate as though the effective range of the radar has been reduced. In heavy rain, the radar's effective range can be significantly reduced due to signal attenuation caused by the rain. This means that the radar may not be able to detect targets at its full specified range. Therefore, the prudent action is to navigate as if the radar's range has been diminished, rather than relying on the full radar range. The other options are incorrect because: B) Increasing the radar gain may pick up weak echoes, but does not address the reduced range; C) Increasing the STC setting reduces close-in clutter, but does not address the reduced range; and D) Increasing the guard rings does not directly address the reduced radar range in heavy rain.