An orange flag on a boat may be used to signal that a skier or other water sports participant is in the water or is about to enter the water. When an orange flag is displayed on a boat that is towing a skier or other water sports participant, it indicates that the skier is in the process of falling or has fallen from the ski or other device and is in the water.

In this case, the orange flag serves as a warning to other boats and watercraft in the area to be cautious and to avoid the area where the skier is in the water. It is important for all boaters and watercraft operators to be aware of the presence of an orange flag and to take appropriate precautions to avoid colliding with or otherwise disturbing the skier in the water.

In general, it is important for all boaters and watercraft operators to be aware of the various signaling devices that may be used on the water and to respond appropriately when they are encountered. This includes being aware of the meaning of different colored flags and taking appropriate action based on the signals they indicate.