■Descent

Exhaust the BC air completely and exhale greatly.

All descents are foot first.
Air can accumulate in the legs inside the dry suit, so head first descent cannot be used.

If you feel a squeeze while descending, supply air to the dry suit to eliminate the squeeze and maintain neutral buoyancy in water.

If you feel a squeeze, supply air.

■Ascent

Ascends while exhausting air from the exhaust valve.
When exhausting, raise the left shoulder and exhaust in a vertical position so that the exhaust valve is in the shallowest position.

Raise the left shoulder and exhaust