Anilao’s trip was the Buddy of KiKi. After 3 days of diving, she found some problems. Recalling the other novices who have experienced these 45 bottles of gas, they all have these problems more or less. Summarizing a little, these “seven common mistakes” have been compiled. I hope everyone can discuss them together and help newcomers improve their skills.
1. Poor neutral buoyancy
The neutrality of the newbies is very general. To be honest, the newcomers with more than 10 bottles are basically like this, and I have survived that way. Seeing that the DM’s body is dozens of centimeters away from the bottom of the sea without touching the ground, he can’t do it. There is no other way except to dive more and pay more attention. If you must say it is a trick, remember to start proper inflation to establish neutrality when you dive to the bottom of the sea. In the process of establishing neutrality, try to inhale half or two-thirds of your vital capacity, because the breathing rhythm under water is inhale-stop-exhale. There is a delay of about 5 seconds during this period. If you are exhaling When phosgene is neutral, it will inevitably become too buoyant after inhalation. This breathing method may not be suitable for everyone, but the rules summarized by many experts are also more effective for me. Poor neutral buoyancy will not only cause you to waste more air, kick the corals, and may inadvertently encounter poisonous fish or other creatures. The 3mm Wetsuit is a piece of cake for them. So for the novices who have just taken the cards, you might as well go to the pool to do some basic exercises when you have the opportunity, such as neutral buoyancy, putting elephants and so on. A few hours of practice will surprise others by improving your next dive.
2. Patronize to find things on the bottom of the sea without paying attention to Buddy and others
Novices have great curiosity underwater, and such great interest inevitably produces the above problems. I often look at things all the way along the bottom of the sea, and unknowingly ran to a place a few meters deep to us. She didn’t pay attention to knocking on the bottle every time, so she had to swim over and grab her cylinder and drag her back into the team. It’s a bad habit not to pay attention to Buddy. Ignoring Buddy is to put yourself in danger. If you suddenly find that the first-level head is blocked at a depth of 20 meters and you can’t breathe out, what should you do if Buddy is not by your side? what? Can you think of a controlled floating all the way in the panic? Even if you are taking pictures, you look up at the people around you from time to time. Even if something goes wrong, you can find the right direction by swimming over and grabbing the second head.
3. No habit of looking at the watch
The novice seems not to pay much attention to his own depth and residual pressure in the water, knocking on the bottle to remind me to show me the watch. For novices who ignore this link, the residual pressure gauge is the only instrument that can remind you of your safety in the water, so you must always think about it. And appropriately communicate the residual pressure value with Buddy to determine your residual gas volume. If your gas is too much higher than Buddy, you should consider the situation where there is a problem. Maybe the pointer has broken. At this time, take Buddy’s residual energy as a reference and stay with Buddy. When the residual pressure of Buddy is lower than 50, you should always pay attention, because if you are relatively exhausted, there may be no air at any time. If it can be avoided, try to check the equipment in advance. In addition, not only to communicate residual pressure with Buddy, it is best to communicate with other teammates, because if you both are exhausted, you should consider finding other teammates when you need to breathe in symbiosis.
4. Kick the sand
The phenomenon of novice kicking sand is more common. The main reason is that the body is not level during the swimming process, the head is high and the soles of the feet are high. This posture will cause the kick to produce downward force. After adjusting the neutrality, you will find that the body slowly rises again, so you will Qi adjusts to neutral; at this time, if you stop your feet, your body will begin to sink. In order to prevent sinking and kicking water instinctively, a vicious circle is created. From then on, sandstorms filled the sky with visibility of 2 meters, tragedy. There are two main solutions to this phenomenon. One is to flatten the body and try to make the legs higher than the head; the other is to switch to frog kicking. The common point is that the thrust generated by you during the kick is completely backwards. No upward or downward force will naturally not affect the neutral buoyancy you build, and there is no hard kicking in order to maintain neutral. If this happens, kicking sand will naturally decrease.
5. The body does not stand up when deflating the BCD
The novice stretched the low pressure inflation tube of the BCD while deflating, but forgot to raise it. As a result, he often couldn’t vent his breath, and he was very nervous every time he adjusted the neutral. KiKi held the Ding Ding stick in one hand and the inflatable tube in the whole underwater. After a few times of communication, I still can’t remember it. I think it still comes from the tension caused by not being able to adjust in time. In fact, there is usually no need to adjust the buoyancy in the depth range of 2, 3 meters. Remember what I said before? Inhale half of your breath or two-thirds of your breath each time. If you need to adjust, you can try to exhale or inhale full. Basically at that time, your lungs are another BCD. After stabilizing the buoyancy, adjust the volume of each breath. Enough. If you need to adjust the BCD for too much depth, press and inflate gently, or stop and stand upright to deflate, release a little less at a time, and exhale the air in your lungs while releasing, so that you can control slowly to minimize Re-establishing neutral buoyancy is costly. It takes three breaths to blow the BCD so that it can float on the water. It’s a waste of air in deep water.
6. I like to touch this and that under water with my hands or with a ding-ding stick
Padi’s course emphasized not to touch and pet marine life at the beginning, but when seeing cute things or taking pictures, many people touch things on the bottom of the sea intentionally or unintentionally. (Related reading: What happened to Si Ye, what happened to the celebrity? First of all, you are a diver!) Here is an example for everyone, Bingbing, the girl who dived with me on the platform, accidentally encountered a coral during a dive. After returning to Shenzhen, my hand was swollen for a long time (it seems to be a few weeks). It’s not to scare everyone, but our understanding of marine life is extremely limited. Don’t touch them when you have to last, for us and for them.
7. The dive speed is too fast and there is no control
Some novices will radiate all the BCD’s qi when diving, but not head and feet when diving. In other words, they cannot control the speed of the dive. I would like to advise you newcomers that head and feet are a good diving posture, because when you need to adjust, just kick the water with fins to balance the negative buoyancy. This kind of thing usually happens when there is a problem with the balance of ear pressure. If you cannot stop the dive in time, it is easy to damage the eardrum.
Divers who have just obtained a diving certificate often make mistakes due to the small number of dives and insufficient diving experience, but mistakes, regardless of their size, will often lead to fatal accidents during the diving process. This article summarizes the fact that new divers often The problems encountered share some matters that need special attention, and hope that the novice will have a healthy and safe growth process.