Bouyancy Control

Bouyancy Control: "Ideally, inflating the BC should only be necessary on the surface (for flotation), for wet suit compensation, and for emergency ascents. However, because wet suit compression will alter buoyancy at depth, it is often necessary to add a little air to compensate and re-establish neutral buoyancy. From that point of the dive, buoyancy should be controlled mainly by breathing. (It will also be necessary at the end of the dive to dump out any air added to the BC, in order to prevent too rapid an ascent.)"