Perfect Buoyancy
Buoyancy is one of those skills which is hard to teach in a classroom. To perfect your buoyancy takes practice and new divers often struggle with this important diving skill.
When you control your buoyancy you feel weightless underwater and float effortlessly at the surface. By learning to properly control your buoyancy you’re able to relax and avoid harming delicate marine life underwater.
新的潜水员倾向于抓住其BCD充气机,并依靠膨胀和放气按钮来控制浮力。尽管您的BCD(浮力控制设备)是浮力难题的重要部分,但它不会给您通过游泳和呼吸而实现的微调。
压力如何影响Buoyancy
To understand buoyancy we have to first understand pressure and how it affects air molecules both in our tank and in our BCD. In short, as we descend the molecules compress and as we ascend they expand.
As you ascend the air molecules in your BCD and your lungs start to expand. You want to上升时使您的bcd放气to vent the expanding air. This is also why you never want to hold your breath scuba diving, so that expanding air can be exhaled from your lungs. It is important to understand how pressure affects scuba divers.
How to perfect your Buoyancy
1. At the start of a dive deflate your BCD to descend, you should not be sinking uncontrollably through the water, this would make it difficult to equalize.
2.到达底部后,会稍微膨胀BCD,直到您感到轻巧并开始漂浮在底部。
3.从这里,您的肺部将帮助您微调浮力。当您想上升时呼吸时,请尝试呼吸,并在您想倒下时呼吸。该技术应用于微调您的浮力并进行几英尺的更改。
4. You can also try swimming up while you breath in and be swimming down when you breathe out. This can also help fine-tune your buoyancy while you navigate around a rock or coral.
积极浮力
When you are floating in the water and you don’t need to kick and swim to keep your head above the surface of the water. You can become positively buoyant at the surface by fully inflating your BCD before you enter the water or once you have resurfaced after a dive.
Neutrally Buoyant
当您在水中滑行时,感觉就像您在礁石上飞行一样。对于新的潜水员来说,这似乎是难以捉摸的,但是练习中性浮力成为第二天性。我们可以通过控制和向下或向下游泳以避免物体来使我们的BCD充气和放气,从而变得中立浮力。
负浮力
When you are sinking or falling through the water, or when you find yourself touching the sand or seabed while diving. If you are feeling heavy like a rock, slightly inflate you BCD and take 3-4 breaths, if you are still feeling heavy repeat the steps. Being overweighted or descending too quickly can make itdifficult to equalize.
Remembernever hold your breath when scuba diving.