| Technical essentials: sea submarine's need to | | | | refers to divers carrying oxygen cylinders, oxygen |
| learn: learning, including respiratory tubes and regulators | | | | breathing through the barrel, long diving methods. |
| to use, surface breaks method, emergency | | | | Snorkeling and skin diving in the divers can hold |
| management and so on. Into the water before the | | | | one's breath underwater swimming time; until it |
| preparation is very important! ! Personally check the | | | | can no longer hold your breath when the surface |
| equipment is functioning correctly, peer with each other | | | | approach. Scuba diving rules: two peer-principle: two |
| between the re-check. Position in water: the front | | | | from the shore into the water to have to be together; |
| upright Diving - water depth required to more than 1.5 | | | | coaches not be allowed to go ashore on their own |
| meters and feet before and after the opening, one | | | | companions; They always keep in touch. When placing |
| hand holding down the face mask, hand strap | | | | an order to respond: to maintain calm, floating a few |
| according to the air cylinder. Turning its back to sitting in | | | | meters, looking for companions; can not be found on |
| water - sat on the boat for the state, on his back back | | | | the surface, observe the bubbles. More than 10 |
| into the water. Front sitting in water - for beginners to | | | | minutes, still no traces of peers should be back into the |
| use. Sideways into the water - and then roll the body | | | | water locations. Without the necessary, please do not |
| lying on rubber boats float into the water. Potential | | | | kill animals in the water. Check residual voltage meter |
| drop: BC (buoyancy modem) Act - time buoyancy | | | | for every 10 meters margin. Several common gesture: |
| regulator, with a weight belt, his head at the foot of the | | | | I now in good condition --- "OK" Note that |
| potential drop. Without BC-Touxiajiaoshang. Increased: | | | | (object) direction --- "index finger to indicate |
| the increase in speed control in less than 18 meters per | | | | direction," float --- "right fist, thumb up" |
| minute, it simply is not to exceed their own exhaled air | | | | dive --- "right fist, thumb to the Under the |
| bubbles rise velocity; Do not stop breathing; rise to see | | | | "ear pressure regulation for the first dive or dive |
| the rise of the water, you can specify the direction of | | | | time is not a long one, the water pressure would be |
| his right hand stretched out, pay attention to the back, | | | | people's ear canal, discomfort and even pain. At |
| the body slowly rotation . The following patients not | | | | this point application of hand-pinch the nose, nasal |
| suitable for diving : a cold, nervous diseases, there is Er | | | | forced to drum gas pressure inside the ear canal from |
| disease, heart disease, high (low) blood pressure, while | | | | the second to rise, to offset the pressure of the water. |
| drunk, and diabetes. The difference between | | | | To dive, ear pain, should immediately go up, do not |
| snorkeling and scuba diving: scuba diving scuba diving | | | | trying to flaunt. |