Which of the following is not a function of radar in electronic navigation?

The correct answer is that weather forecasting is not a function of radar in electronic navigation. Radar systems are primarily used for detecting, locating, and tracking objects, which includes both stationary and moving targets. They excel at measuring the distance to these objects, such as other vessels or land features, and play a critical role in collision avoidance by providing essential information about the position and movement of nearby obstacles.

While radar can be utilized to detect precipitation and certain weather patterns, it does not serve as a forecasting tool in the way meteorological instruments do. Weather forecasting relies on a broader set of data gathering and modeling techniques, including satellite imagery, weather balloons, and ground sensors, which are designed to predict atmospheric conditions over time. Thus, while radar can assist in monitoring weather conditions, its primary functions in navigation are distance measurement, tracking, and ensuring safe navigation through collision avoidance measures.