The primary function of a radar system is to __________.

The primary function of a radar system is to detect and track other vessels. Radar systems work by emitting radio waves and analyzing the returned signals to identify objects, determine their distance, course, and speed. This capability is essential for safe navigation, especially in congested waters or during poor visibility conditions. By detecting and tracking other vessels, a radar system helps prevent collisions and assists in effective navigation by providing situational awareness to the ship's crew.

While radar can be used in various applications, such as providing weather information or assisting with navigational tasks, its core purpose is centered around vessel detection and tracking. This is crucial for maintaining safety and efficiency in maritime operations. Other options, while relevant to navigation, do not directly address the primary operational principle of radar technology.