What is the function of fog signals and how are they represented on charts?

• A. Fog Signals Warn of Hazards When Visibility Is Poor; Chart Symbols Indicate Type and Region; Use Them to Navigate Safely in Low Visibility.
• B. Fog Signals Measure Depth.
• C. Fog Signals Indicate Currents.
• D. Fog Signals Are Radio Transmissions.

Answer: (A)