Green lights may appear on which type of buoy?

Green lights are used to indicate the starboard side of a channel when approaching from seaward. In the context of buoys, they are primarily associated with horizontally banded buoys, where the buoy displays a specific color and configuration that represents navigational significance.

Horizontally banded buoys typically have alternating colors — green and black — and the green represents the starboard side. When these buoys are equipped with lights, a green light will signify the same; it helps mariners identify which side of the channel they should be navigating toward while also providing visibility during nighttime or low-visibility conditions.

While vertically striped buoys and yellow buoys may also serve important roles in navigation, they are designated for different purposes and do not display green lights. Vertically striped buoys usually indicate safe water or specific navigation markers, and yellow buoys are used in specific situations, such as caution areas. Spherical buoys often serve as mooring markers rather than for channel designation, further distancing them from the use of green navigation lights.