Which statement best describes the function of channel marker lights?

The function of channel marker lights is primarily to indicate the edge of safe water. These lights are part of the navigation aids that help boaters determine where it is safe to navigate, especially in areas where the depth of water may vary significantly, or where obstacles may be present.

Channel marker lights aid in defining the navigable channel, helping boaters avoid shallow or hazardous areas that could lead to grounding or collisions. By signaling safe passage routes, these lights play a crucial role in promoting safe boating practices, particularly during low visibility conditions, such as at night or in fog.

While the other statements provided might touch on aspects of boating regulations or safety, they do not accurately reflect the specific purpose of channel marker lights. Decorative purposes do not serve the primary navigation function, signaling a speed limit or indicating right-of-way issues pertains to other types of navigational aids or regulations that do not focus on the safe boundaries of the waterway.