What are sidelights on a vessel used for?

Sidelights are crucial for maritime navigation, as they serve the primary purpose of showing a vessel's navigation direction to others. They are positioned on the front sides of a boat and typically consist of a red light on the port (left) side and a green light on the starboard (right) side. When a vessel is approaching, these lights help other boaters determine which direction it is moving, thereby promoting safety and preventing collisions on the water.

Understanding the significance of sidelights is essential for all boat operators, as they play a vital role in nighttime and low-visibility conditions. Proper use of sidelights aligns with navigation rules and regulations, ensuring that vessels can safely coexist in shared waterways.