How to Use a Buoyancy Compensator in Scuba Diving
Neutral buoyancy underwater is essential. The buoyancy compensator, BC, is your main tool for controlling this state. It's sometimes called a BCD ' buoyancy control device.
- Difficulty:
- Moderately challenging
Instructions
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1
Strap the BC to your tank and attach its inflation hose.
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2
Secure the BC on your back.
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3
Familiarize yourself with the inflate and deflate buttons on the left side of the BC vest.
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4
Practice inflating the BC orally by holding down the deflation button and blowing into the mouthpiece attachment.
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5
Fill the BC halfway before entering the water.
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6
Deflate completely when submerging.
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7
Tap the inflate button to give short bursts of air as you descend deeper.
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8
Add air to the BC and establish neutral buoyancy once your desired depth is reached.
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9
Deflate the BC constantly while ascending.
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1
Tips & Warnings
Never wear a BC too tightly. Once inflated, it will tighten more and may be difficult to remove underwater if necessary.
Never overinflate while ascending and always keep your thumb on the deflate button.
Use only release clips and no ties to affix the BC and tank on your back. It should be easy to remove in case of an emergency.
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Comments
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Nov 22, 2005
When I was getting certified, even though I was slightly overweight, I could never take a knee on the bottom without floating off. I realized I wasn't emptying my buoyancy compensator, even though bubbles stopped coming out. Make sure you raise the end of your deflater higher than the top-most portion of your buoyancy compensator, where the remaining air collects, or it won't leave! Also, use your pull-dump positioning your body so that the valve is as high as possible.
