Which feature is critical for effective radar operation in coastal waters?

Clear display resolution is critical for effective radar operation in coastal waters because it enhances the operator's ability to distinguish and identify various objects, such as other vessels, buoys, and coastal features. In cluttered environments like coastal areas, where reflections from land and other small objects are prevalent, having a high-resolution display allows for improved target separation and identification. This clarity helps mariners make informed decisions regarding safe navigation, collision avoidance, and situational awareness.

While longer antenna length, higher frequency operation, and reduced power consumption are important factors in radar technology, they do not directly impact the immediate practicality of interpreting radar data in the challenging conditions of coastal navigation. The clarity of what is displayed is paramount for navigational safety, particularly in environments where precision is critical.