What does a white marker with an orange crossed diamond and the words "Swim Area" indicate?

A white marker displaying an orange crossed diamond along with the words "Swim Area" signifies that the area is designated specifically for swimming and that vessels are prohibited from entering this zone. The presence of this marker indicates a safety measure for swimmers, as it warns boaters to keep clear of these areas to prevent accidents and ensure the safety of individuals enjoying recreational swimming.

This type of marker is critical in areas where water sports and swimming activities take place, as it helps delineate safe zones for swimmers versus areas designated for boating or other watercraft activity. The clear communication of this restricted access through visual markers promotes safety and reduces the risk of collisions between swimmers and vessels, thereby enhancing the overall boating experience while ensuring swimmer protection.