What does a circle non-lateral marker signify when boating?

A circle non-lateral marker indicates controlled areas in boating. These markers are typically used to delineate areas where specific regulations apply, such as no-wake zones, speed restrictions, or areas that are restricted from public access, such as swimming or marine life protection zones. Boaters should pay attention to these markers to ensure compliance with local laws and to promote safety and environmental protection on the water.

This contrasts with other options, which describe different types of markers; for example, routes available for boaters would be indicated by different navigational markers, whereas warnings about dangerous currents are often signified by warning markers, and exclusive access for private vessels is usually indicated through specific signs or markers that denote private property or rights of way. Understanding these distinctions helps boaters navigate safely and responsibly.