What is the flashing sequence of a cautionary buoy?

The flashing sequence of a cautionary buoy is characterized by a specific repetition pattern that allows mariners to easily recognize and understand its purpose. The correct flashing sequence consists of one flash occurring every four seconds. This consistent and predictable pattern is essential for navigational safety, signaling to boaters that caution is required in that particular area, often due to potential hazards or to alert them to nearby conditions that may require attention.

Cautionary buoys serve as important markers in the water, helping to guide vessel movement while indicating areas that may require slower speeds or special awareness. The one flash every four seconds is integral to ensuring that the buoy’s message can be clearly seen and understood from a distance, especially at night or in low visibility conditions. This helps to enhance overall safety on the water by providing clear cues for navigation decisions.