Signal flag

A signal flag is a visual communication tool used by ships, military, and maritime organizations to convey specific messages, warnings, or instructions across distances. Each flag has a unique design, color, or pattern representing different meanings, such as signaling distress, navigational status, or operational commands. When multiple flags are flown together, they can form complex messages based on standardized codes like the International Code of Signals. This method allows quick, clear communication without verbal exchange, especially over noisy environments or long distances at sea.