What is the primary dive flag used in cavern diving?

In cavern diving, the primary dive flag used is the diver down flag, which is a red flag with a white diagonal stripe. This flag indicates that there is a diver below the surface and serves as a warning to other boats and divers in the area. The purpose of the diver down flag is to ensure safety by alerting others to the presence of divers and promoting awareness of diving activities in the vicinity.

This flag is essential for safety during any scuba diving activity, including cavern diving, as it helps prevent accidents by ensuring that boats steer clear of areas where divers are underwater. It is recognized internationally as a symbol of underwater activity, making it a vital component of dive safety protocols.

While the other flags mentioned have their own uses, they do not serve the same primary purpose when it comes to indicating divers in the water. The red flag with a white stripe is the standard for divers, particularly in the context of cavern diving, where safety and visibility are paramount.