■Buoyancy problems on the water surface

The most important thing to prevent trouble on the water surface is to secure buoyancy.

In the unlikely event that the BC breaks down and buoyancy cannot be secured on the water surface, return to the land or boat while breathing with a regulator or backup scuba.

Also, if the air from the regulator or backup scuba is not available, discard the weight and swim with buoyancy, or swim with a snorkel and exit.

When swimming with snorkels, keep your body parallel to the water surface to reduce water resistance.
In order for the tip of the snorkel to reach the water surface , it is important to remember the angle of the water surface looking up from underwater.

Practice the correct form so that you can calm down and swim with your snorkel, even if your BC is out of order.