Diver Down Flag - Meaning, Usage, and Safety Guidelines #3062205 (License: Personal Use)

This is the internationally recognized diver down flag, featuring a vertical bicolour of white (left) and blue (right), with a distinctive diagonal cut on the right side. It signals that scuba or freedivers are in the water nearby and that vessels must proceed with caution, often at reduced speed and maintaining distance. In many jurisdictions, displaying this flag is legally required when divers are within a specified radius of the vessel or dive site.

Commonly used on dive boats, shore entries, and dive logs; appears in marine safety guides, dive certification materials, and coastal signage. Matches user intent for understanding diving safety protocols, maritime regulations, or preparing for a dive trip.