What is the purpose of a 360-degree white light on a vessel?

The purpose of a 360-degree white light on a vessel is primarily to indicate the vessel's position to others. This type of lighting serves as an all-around light that is visible from any direction, making it essential for nighttime navigation and ensuring that other boats can see the vessel from afar. This visibility helps prevent collisions and allows other vessels to understand the relative position and heading of the boat.

In maritime regulations, particularly the International Regulations for Preventing Collisions at Sea (COLREGs), the presence and operation of proper navigation lights are crucial for safe navigation. The 360-degree white light is typically used on vessels when they are at anchor or under sail, signifying their presence to other mariners in the area. Understanding this function of the light is critical for anyone involved in marine operations, ensuring safety and compliance with maritime regulations.