What is a key warning indicated by a diamond regulatory marker?

A diamond regulatory marker is specifically designed to convey warnings related to potential hazards in the water. This includes obstacles like rocks, shoals, or other dangerous underwater features that may pose a threat to navigation or safety. The diamond shape itself indicates a warning, alerting boaters to proceed with caution in those areas.

While markers indicating the presence of marinas, idle speed zones, or swimming areas have distinct shapes and colors specific to their functions, the diamond regulatory marker is solely focused on highlighting hazards. Recognizing the importance of these markers helps boaters navigate safely and avoid accidents or damage to their vessels. Understanding this distinction is crucial for anyone operating a boat in Missouri waters.