Hune lights

A jib light is a navigation light used on some boats to indicate their height above the water. It is placed on the mast or on another elevated structure of the boat, such as the jib (an open space at the stern of the ship, usually located above the stern).

The jib light is mainly used in conditions of reduced visibility, such as at night or in thick fog. It can be red, green or white, and must be switched on when the boat is in motion.