What does "light sector" refer to in IALA terminology?

A "light sector" in IALA terminology refers to an area that is illuminated by a specific color light on a buoy. This concept is crucial for mariners as it helps in navigation and in identifying specific safe passages or hazards. The use of different colors within a light sector aids in indicating the direction and nature of the navigational aids, providing vital information to vessels in the vicinity.

By shining different colors over designated sectors, light sectors enable mariners to determine their position relative to navigational aids and make informed decisions while navigating. Therefore, the understanding of light sectors is fundamental in promoting safety and guiding vessels through potentially hazardous waters.