What does a white marker with an orange crossed diamond and black lettering signify?

A white marker featuring an orange crossed diamond and black lettering signifies an exclusion or keep-out area. This sign is used to inform boaters that entry is prohibited in that specific zone for safety reasons, such as environmental protection, hazardous conditions, or construction activities. The orange crossed diamond acts as a clear warning, indicating that there are potential dangers within the area that can pose risks to vessel operators and passengers. Recognizing these markers is crucial for maintaining safety on the water and adhering to local boating regulations.

Understanding the meaning of such markers helps in ensuring compliance with navigational rules and promotes the safe use of waterways.