What does a green marker indicate on a waterway?

A green marker on a waterway indicates the right side of a channel when returning from open water, primarily following the IALA (International Association of Lighthouse Authorities) system used in the United States. This system uses colored markers to help boaters navigate safely through channels and avoid hazards.

In this context, when you are navigating back from the open water towards the shore, the green markers will be on your starboard (right) side, while red markers will be on your port (left) side, providing clear guidance for safe passage. Recognizing these markers is essential for boating safety, as they help you understand which side of the channel to travel on, thus avoiding grounding or collisions with other vessels.