What does the color green signify on a navigational buoy?

The color green on a navigational buoy signifies the right side of a channel when returning from sea. This is part of the IALA (International Association of Lighthouse Authorities) buoyage system, which is used in many parts of the world. According to this system, when vessels are approaching a harbor or navigating inland, green buoys indicate the starboard (right) side of the channel. This helps mariners maintain the correct course and avoid hazards.

Green buoys are often paired with red buoys, where the red buoys indicate the left side of the channel (port side) when returning to port. This system is crucial for safe navigation, especially in narrow or tricky waters where precise positioning is necessary to avoid grounding or collisions. By understanding the system and recognizing the colors of buoys, boaters can navigate more confidently and safely.