Ever find yourself slowly sinking, adding a little air to your BCD, floating upward, dumping some air, and then sinking again? Good scuba diving buoyancy is the fundamental scuba diver skill.
You are not alone. Many divers spend much of a dive making small corrections to their position in the water. We sometimes call it being a “yo-yo diver”—continually moving up and down instead of staying comfortably at the depth we want.
The good news is that better scuba diving buoyancy doesn’t require more effort. In fact, it usually requires less.
Start With The Right Amount of Weight
Good buoyancy begins before you leave the surface.
Carrying too much weight makes you compensate by putting more air into your BCD. That can make your buoyancy changes more noticeable and make maintaining a steady depth more difficult.
Your exposure protection, tank, saltwater and freshwater conditions, and equipment all affect how much weight you need. Take the time to establish the minimum weight that allows you to descend comfortably while maintaining proper control.
Let your breathing help
Your lungs are a natural buoyancy-control system.
A full breath makes you slightly more buoyant. Exhaling makes you slightly less buoyant. Once you are properly weighted and neutrally buoyant, controlled breathing can help you make small adjustments without constantly reaching for your BCD inflator or dump valve.
Try breathing normally rather than holding your breath or deliberately taking exaggerated breaths. Good buoyancy should feel relaxed.
Make small BCD adjustments
Your BCD is there to compensate for changes in buoyancy, particularly as you descend, ascend, and use gas from your tank.
The key is small adjustments followed by patience.
If you add a little air and immediately add more because you haven’t noticed a change, you may soon find yourself too buoyant. The same applies when dumping air.
Make a small adjustment, maintain your position, and give the change time to take effect.
Look at your trim
Being neutrally buoyant is only part of the equation. Your position in the water also matters.
A diver who is horizontal and streamlined generally needs less effort to move through the water than one who is swimming in a head-up or feet-down position.
Look at where your tank, BCD, weights and other equipment are positioned. Small changes in equipment placement can make a surprisingly large difference to your trim.
Better buoyancy means better diving
Good buoyancy can make diving more enjoyable in several ways.
You may use less energy and potentially less breathing gas. You can maintain a more comfortable swimming position. You can take photographs with less movement. And, perhaps most importantly, you can enjoy the reef without constantly thinking about your depth.
It also makes you a better visitor to the underwater environment. Staying properly trimmed and maintaining control helps you avoid accidentally contacting corals or other marine life.
Want to improve?
Buoyancy is a skill, and like any skill, it improves with practice.
If you want structured training, consider the PADI Peak Performance Buoyancy Specialty. The course focuses specifically on weighting, trim, streamlining and techniques for improving buoyancy control.
You can learn more about the specialty through PADI’s Peak Performance Buoyancy course.
And when you dive with Splash Dive Center in Placencia, our instructors and divemasters are happy to help you work on your buoyancy skills during your dives.
The goal isn’t to do more underwater. It’s to learn to do less—and let good buoyancy take care of the rest.
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