■Lifebuoy rescue

1. Prepare a lifebuoy.
2. Tell loudly that you will throw the lifebuoy, and throw it.
3. Loudly tell the diver to hold onto the lifebuoy.
4. Swim and get closer keeping an eye on the diver.
5. Calm the diver until he can comfortably breathe.
6. Hold a lifebuoy and tow the diver to a safe place.