Remember your first diving lesson?
Often the simpler the content,
The easier it is to be ignored.
Let’s review the basic knowledge of diving introduction together.
How to wear equipment
A: Dry wetsuit: The material contains “base material” which is smoother. You can put it on directly.
B: Wet wetsuit: You must get your body and wetsuit wet to put it on smoothly.
C: Wet wetsuit: If it is in winter, talcum powder or prickly heat powder can be applied to the inside of the wetsuit. Especially the parts of hands and feet to facilitate wearing.
D: When wearing, do not pull with your nails to prevent tearing.
A: BC, after wearing a diving suit.
B: Keep a fist-wide tightness with the body (in the chest state). Too tight will cause squeezing, and too loose will move up and down.
A: The snorkeling tube has a fixed strap fixed on the left side of the mask belt (the right position is the position of the adjuster during scuba diving).
B: The snorkeling tube is installed in front of the ear on the left side of the mask.
A: After wearing the mask, take out the front hair to avoid water leakage.
B: In order to prevent the mask from blurring, you can apply it gently with water. Tobacco and seaweed are also good methods. Don’t forget that there is a defogging agent.
A: Before putting on strap fins, adjust the length of the buckle first, usually there is no difference between left and right.
B: Shoe-shaped fins are the same as wet wetsuits. They must be wetted with water before they can be worn, and a fixing strap is added to ensure that they will not come loose.
A: The weight belt is tied around the waist and is the last thing to wear, so that it can be untied at any time.
B: The weights are placed on both sides, so that it can be easily balanced during diving.
C: The excess part of the weight belt must be cut off, and the maximum should not exceed 15-500px.
Use of breathing tube and drainage
1: When diving into the water, the water will be immersed in the snorkeling tube, so you must float to the surface and blow hard to get rid of the water.
2: Inhale slowly, and blow hard when exhaling. The water in the pipe must be drained out.
3: When diving into the water, do not exhale in the water, lest there is no air to drain the snorkeling tube after floating on the surface.
Squeeze and drain the mask
1: External pressure increases when descending, which can cause squeezing. It must be excluded to avoid injury to the face.
2: At this time, the nose blows slowly.
3: Return to normal state.
4: When the mask enters water, the head rises slightly, pressing the upper part of the mask, and blowing in the nose slowly to drain the water.
Use of fins
1: The use of fins is the same as that of freestyle feet. The knees should not be bent too much and swing by a large margin.
2: Keep your chest straight and face forward.
3: Beginners should use softer fins.
Techniques you must learn in open water
1: Use snorkeling tube and regulator exchange exercise.
2: Two people share a regulator exercise. This is how to deal with when one of the air cylinders runs out or fails
3: The method of draining the water in the regulator.
4: Rest on the water (the mask can be taken off). Diving for a long time makes the eyes tired (under high pressure).
5: Mask drainage method
6: The breathing method of the regulator = this is called “scuba diving”.
7: Emergency ascent when in distress. If you are caught in the water for some reason or by a foreign object, remove the air cylinder and weight belt and float to the surface in an emergency. Please do not practice alone.
It is recommended that you study these techniques with a professional instructor who holds an internationally recognized license. Check your equipment before departure and collect relevant information about the diving site.
1: The tide of the dive site.
2: The local climate.
3: Local authorities or relevant government laws and regulations. (There may be control. No need to report…)
4: The nearest first aid station and telephone.
5: There may be diving guide (unfamiliar sea area).
Choose a suitable entry point
1: The wind and waves are too strong to enter the water from the shore.
2: When walking into the sea, when the water is knee deep, you must be careful not to be washed away by the waves (when you have equipment on your body, it is not easy to maintain your balance).
3: When the water depth reaches your waist, grasp the moment when the wave retreats and swim towards the ocean. (Try to choose a terrain with a steep slope)
4: You can dive directly on the topography of the reef or the harbour (dikes) or the water from the boat.
Types of diving
1: The depth of the frontal upright diving must be more than 1.5m, with your feet open back and forth, and holding the mask and air tube strap with both hands.
2: The back (seat) diving is only suitable for entering the water from a boat.
3: Frontal (seat) diving is suitable for beginners.
4: Go sideways into the water like a frogman troop, from the rubber dinghy, roll on your stomach into the water.
* When diving into the water, do not hold the breathing tube, please use the regulator directly to dive
1: If the B.C. method is not used.
2: Use the foot frist method of B.C. (feet frist) is a descent method on the head under the feet, with the weight belt, and then let the air in the B.C. sink. The advantages of this method are that it is easier to perform ear pressure balancing, and it can maintain a sense of direction and has a strong connection with peers.