The art of diving is to achieve perfect weightlessness. That means controlling your buoyancy – hovering, not floating or falling down and can move in any direction you want with minimum effort. That’s all scuba diving has and is called neutral buoyancy. To achieve this, you need to be “weighing” your weight accurately. They must match your equipment, the clothes you wear as well as the water environment where you dive.
Balance your weight.
The ideal weight you need to achieve is that when standing in the water with an upright position, you will float with medium-sized eyes on the water while your air tank is full and your lungs are full of air.
When floating in this way, you will begin to sink when breathing out. Breathing in from the regulator will make you rise to your previous position. You will never be sunk like a stone. This simple test takes into account the amount of air you will consume when diving. At the end of the dive, with an empty cylinder, you will notice that when you hit the lungs, your chin and shoulders will be visible on the water.
It can be seen that many inexperienced divers have a non-horizontal swimming posture, which is half a straight up front. This means he carries too much gravity, or there is not enough air in the BCD. These people swim in an upright posture because most of them try to pedal their legs to maintain depth rather than to advance in the horizontal direction.
If your buoyancy is almost standard, when you swim in the horizontal direction, if you want to have a body posture like standing up, you just need to raise your head up.
When it emerges, the air in the BCD will expand with a decrease in depth and you may be at risk of being unintended. The rule of good buoyancy control is to use a minimum of gravity (lead weights) in combination with a minimum of gravity compensation air in BCD.