What does a red channel marker indicate?

A red channel marker indicates that vessels are returning to port or heading back into a harbor. Channel markers are used in navigational systems to guide boaters safely through their intended routes. In the U.S. Aids to Navigation System, the red markers signify the right side of the channel when entering from open waters. This convention helps to ensure that navigators can maintain their course and avoid hazards.

Understanding this signaling is crucial for safe navigation because following the color coding of the markers helps prevent accidents and grounding in shallow areas or around obstacles. Therefore, recognizing that a red channel marker denotes a return route is essential for any mariner operating in these waters.