กลเม็ด 10 ประการ ในการควบคุมการลอยตัว (Buoyancy Control) ให้ดีขึ้น

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Scuba Tips: 10 Tips for Better Buoyancy Control

Buoyancy control can be a hard skill to perfect, but a very important and fundamental one in Scuba diving. Not being able to control your buoyancy properly during a dive can be frustrating as you’ll end up having to add and let out air from your BC (Buoyancy Compensator) constantly to keep from bumping into things or grazing the floor with your fins or knees. Bad for you and even worse for the reefs. Not to mention, the uncontrolled bobbing up and down directly affects a divers air consumption and simply takes away from the enjoyment of the dive.

Here are 10 tips for improving your Buoyancy Control when you Scuba dive-


1. Buoyancy Control Tips Using proper Scuba weights. Wearing the right amount of weight/s is crucial to achieving the right buoyancy. With an empty tank and no air in your BC, at the surface you should be at eye level with the water, when properly weighted. The goal is to be neutrally buoyant at the 15-foot safety stop where your tank will have less air and be positively buoyant. Always adjust your weights in 1-2 lb increments.



2. Keep a record of the weights you used for each dive which will help provide a guideline for making adjustments when at a new dive location. Also note the wetsuit thickness used as this will play a part in the weights you used.




3. Improve your buoyancy control by using your Buoyancy Compensator less, not more. The key to neutral buoyancy is not in using your buoyancy compensator more. In fact, in a lot of cases it is the reason for not being able to achieve the perfect buoyancy. When you first descend, release air from your BCD slowly and give it a time to take effect. Once you’re at a depth you want to stay at avoid touching your BC for the rest of the dive. (*Above photo by – star5112 on flickr)

4. As soon as you are underwater get into a horizontal position. The water pressure against your body helps you descend faster without taking out too much air from your BC thus allowing you to keep a fair amount to remain neutrally buoyant near the bottom and not sink like a rock for letting out too much. Staying horizontal also ensure that when you kick it propels your forward and not upward.




5. Remember your Scuba tank will become lighter during the dive so make sure your descents are easy. If you have to struggle to get down, chances are you’ll have to work hard to stay down at the end of the dive and safety stops are difficult if you’re too buoyant.

6. Stretch the inflator hose of your BC upwards while releasing air. Squeezing the BC against your chest with your free arm will also ensure that the last few bubbles find the exit.Buoyancy Control




7. Breathe right, deep and consistent. You can ascend or descend a few feet solely by breathing in or out. Never hold your breath, but learn to control your breathing. Exhale completely before reaching for the inflator buttons on your BC. A lung full of air can add as much as 10 pounds of buoyancy.




8. Relax. Extra movement, like flailing arms and improper fining can make you raise without even realizing it. This may make you think you are lighter than what you really are. Especially while descending try to overcome any nerves and make a conscious effort to keep your arms still and extend your legs, pointing your dive fins straight down for the least resistance.




9.Scuba diving wetsuits can have an effect on your buoyancy. As your wetsuit gets wetter, the bubbles in the wetsuit compress from the pressure and it’ll become less buoyant. Keep this in mind before you jump to the conclusion that you are under weighted and add any weights to compensate. (*Photo by – dachalan on flickr)




10. Practice. Like most Scuba diving skills, buoyancy control takes practice to perfect. With more dives under your belt you tend to relax and be more comfortable underwater making buoyancy control a breeze wherein you don’t even think about it. It also helps that with more experience, you know the weights you need.

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