What does a red light on a buoy indicate when entering a channel?

A red light on a buoy indicates that it marks the right side of the channel when entering from the open sea or a larger body of water. This is consistent with the IALA (International Association of Lighthouse Authorities) buoyage system, where navigational aids are color-coded to provide guidance to mariners. The right side buoys are typically red, helping boaters to maintain the correct course as they navigate the channel. Following these color codes ensures safe navigation and helps avoid collisions or grounding.

The other interpretations regarding what a red light signifies do not align with standard buoyage systems. For instance, a red light does not indicate danger ahead; instead, danger markers are usually specialized and often marked differently. Similarly, stating that it marks the left side of the channel or that the preferred channel is to the right is incorrect based on these navigation principles. Understanding these signals is crucial for safe boating practices in Tennessee waters and beyond.