These markers are used as navigation aids indicating prohibited area, danger area, restricted area and general instructions. They are also known as non-lateral markers.
re
Controlled area
controlled area, such as a no-wake zone
A white marker with an orange circle and black lettering typically indicates a safety or warning sign in various contexts, such as construction sites or outdoor activities. The orange circle often signifies caution or alertness, while the black lettering provides specific information or instructions. This type of marker is used to draw attention to potential hazards or important information that requires immediate awareness.
It is a control buoy- indicates speed limits, no-wake zones, etc
White buoy's with orange markings and black lettering are a regulatory marker for boaters.
keep out of that area
Road work ahead
This is a non-lateral marker. It can indicate a controlled area, such as no wake. It can be an informational marker, a "keep out" marker, or a warning marker (Dam, Rock, etc)
keep out of that area
Watch out for dangers such as rocks or stumps.
A white marker with an orange diamond and black lettering indicates a hazard in the water. The diamond shape signifies a warning, and the black lettering provides specific information about the danger, such as "Danger" or "Keep Out." Boaters should exercise caution when approaching these markers to avoid potential hazards.