What are circle markers typically used for?

Circle markers are specifically used to indicate controlled areas on waterways, such as swimming zones, no-wake areas, or restricted access locations. These markers help boaters understand where certain activities are permitted or prohibited, ensuring the safety of both the boaters and other waterway users, such as swimmers or fishermen. By recognizing these markers, boaters can navigate responsibly and comply with local regulations designed to protect the environment or enhance safety.

Markers serving different purposes can include a variety of shapes, but circles are distinctively associated with control measures on the water. For instance, while navigation channels are marked with other specific shapes and colors to guide vessels, circle markers are universal signals for areas with restrictions or special rules.