What does a red flag with a diagonal white stripe indicate?

The red flag with a diagonal white stripe is a universally recognized signal indicating that water skiing or towed water sports are in progress. This flag serves as a warning to other boaters and swimmers that there are individuals being towed on the water, which necessitates additional caution. The flag alerts others to avoid the area, ensuring the safety of both the participants in the activity and other water users.

This visual cue is also important for preventing accidents, as it helps maintain a clear zone around those engaging in water sports. By understanding this signaling system, boaters and other individuals on the water can respond appropriately, enhancing safety for everyone involved.