What does a lighted buoy indicate when navigating at night?

A lighted buoy serves as an essential navigational aid when boating at night. Specifically, it indicates safe entry and the edge of the channel, which helps guide boaters along safe routes and away from hazards. The illumination of these buoys enhances visibility and assists mariners in maintaining their course, particularly in low-light conditions. These buoys are usually colored and have specific light patterns that can signal various navigational information, but when discussing safe passages, this particular function is crucial for ensuring the safety of vessels as they navigate through potentially treacherous waters.

Alternatively, while other options may suggest various warnings or restrictions (such as rocks, fishing areas, or anchoring prohibitions), they do not accurately represent the primary function of lighted buoys, which is to provide clear guidance in navigating channels safely.