What does it mean when a red flag is raised on a boat?

When a red flag is raised on a boat, it signifies that there is a hazardous condition or danger nearby. This warning signals to other boaters and individuals in the vicinity that they should proceed with caution or avoid the area to ensure their safety. Red flags are commonly used in various maritime contexts to indicate danger, such as the presence of strong currents, poor weather conditions, or other potentially harmful situations. This universally recognized signal is crucial for maintaining safety on the water, allowing other boaters to react appropriately to protect themselves and their passengers.