What does a green buoy indicate?

A green buoy indicates the left side of the channel when returning to harbor from open water. This is based on the traditional maritime navigation system known as the IALA system, which provides guidelines for marking navigable waters. Under this system, when vessels approach a harbor, the green buoys (also known as "can buoys") are on the left side of the channel, while red buoys (or "pillar buoys") are on the right side. This color-coding helps to guide vessels safely into harbor, allowing for easier navigation in potentially crowded or complex waterways. Understanding this system is vital for safe boating practices, as it directly influences navigational decisions while at sea.