Marine radar is a navigation system used on ships and boats to detect other vessels, land, and obstacles in the water. It works by sending out radio waves that bounce off objects and return to the radar system, allowing operators to see the location and distance of nearby objects on a screen. This technology is essential for safe navigation, especially in poor visibility conditions like fog or heavy rain. The information provided by marine radar helps captains make informed decisions to avoid collisions and navigate safely. It can also assist in monitoring weather patterns and tracking the movement of other ships, enhancing overall maritime safety and efficiency.