What is the main purpose of navigation lights on boats?

The main purpose of navigation lights on boats is to aid in navigation and prevent collisions. These lights serve as a critical safety feature that allows vessels to be seen by others, especially during low visibility conditions such as at night or in fog. By displaying specific colors and configurations, navigation lights help other boaters determine the direction and activity of a vessel, as well as its type. For instance, a red light on the port side and a green light on the starboard side indicate the orientation of the boat, while a white stern light indicates its rear. This visual information is essential for all waterway users to maintain safe distances and avoid accidents.

While navigation lights do have other functions, like potentially deterring fish and providing some illumination on deck, these roles are secondary to their primary purpose of facilitating safe navigation on the water. By following established regulations regarding the use and positioning of navigation lights, boaters contribute to a safer boating environment for everyone.