What is the main purpose of using a dive flag?

The use of a dive flag primarily serves the purpose of indicating the presence of divers in the water. This is crucial for ensuring the safety of divers and for alerting boaters and other watercraft to the fact that there are people submerged nearby. The dive flag signals that individuals are below the surface and helps prevent accidents, as boat operators can maintain a safe distance from the area marked by the flag. It is a standardized way for divers to communicate their presence and is recognized internationally, which enhances diver safety in various waters. Understanding this function underscores the importance of using a dive flag whenever divers are active, thereby promoting awareness and respect for safe diving practices.