Dive Tips

Scuba Dive Training worldwide with Pete Bucknell

12/ Buoyancy control

Good buoyancy control makes you a better and safer diver, one who is easier to dive with, and one who doesn’t harm the environment.
Work on it, ask for advice and if you are having trouble.
First get your weighting correct.
Consider taking the
peak performance buoyancy course.

As you descend:
  • Keep the volume of air in your BC ‘more or less the same’
  • Add air as the pressure is contracting the existing air in the BC
  • Your wetsuit is being compressed as you descend, so a little more air is needed in the BC
  • Stop before you hit the bottom, avoid coral and don’t silt up the site

After you establish neutral buoyancy, breath normally, but: 
  • use breath control to make small adjustments at a given depth
  • don’t hold your breath, ever.
  • breath in the part of the lungs that serves your needs at the time, but don't do it for extended periods

  • Large adjustments in depth require BC inflating: puffs or purges
  • Small adjustments in depth: use your lungs, but don’t hold your breath
  • As you ascend:
    Keep the volume of air in your BC the same by letting air out
(as the falling ambient pressure allows air to expand in the BC )

Read about
Air Consumption