What new divers need to know about diving?
May 24, 2022
As the weather gets hotter, many people will want to get their scuba diving certification. Before you can become a diver, you need to know this.
Requirements for learning to dive
You do not have to be a competitor, but your health must be good, especially respiratory and circulatory. You must have the maturity, good judgment, and self-discipline to follow the guidelines and principles required for safe driving.
Based on the above, it is enough that you have normal intelligence and mental maturity, and good health. Many people ask, "Can I dive if I am not good at water? Yes, you can dive, the PADI course requires you to float 200 meters in the ocean, and the buoyancy of the water and flippers make this easy.
Does it sound dangerous to dive?
The truth is that diving is more dangerous because of various diving diseases.If we follow the recreational diving regulations, diving can be a safe recreational sport within the scope of recreational diving.
But we must be aware of the dangers:
This is the most important diving disease for divers to be aware of. Divers breathe high-pressure air supplied through an air cylinder underwater. If they ascend immediately after inhaling high-pressure air, the alveoli will rupture (the water pressure around the ascent is lower than the air pressure in the lungs), and the air in the lungs will enter the bloodstream stopping the blood circulation. Therefore, when rising, it is not possible to stop breathing, but one must maintain large and slow breathing.
This phenomenon occurs when divers are generally at a depth of about 30 meters. Nitrogen intoxication will make people think and judge less, and in serious cases, it will lead to death.
Carbon dioxide poisoning:
There will be accelerated breathing. When driving, try to avoid stopping breathing (in order to dive longer) or doing too strenuous movements in deep water.
Underwater heat loss is 20 times faster than in the air. Although some areas are warmer than others, the accumulated heat loss and physical exertion from several days of intense driving can easily cause discomfort, and sometimes these discomforts can have very negative consequences.
Marine creatures generally do not attack humans but often do so because of active provocation and touching by divers, so keep your hands and feet to yourself.
The nitrogen in the compressed air we breathe underwater is absorbed by the body under high pressure, and if the external pressure suddenly decreases, small bubbles will form in the body, these small bubbles will compress the nerves, blocking blood and oxygen exchange, leading to paralysis or even death in serious cases.
There are currently hundreds of diving organizations around the world, with varying degrees of visibility, popularity, and internationalization depending on their business strategies and approaches. Currently, the world's largest diving organizations include the World Aquatic Federation (CAMS), the Association of International Diving Instructors (NAUI), and the Professional Association of Diving Instructors (PADI). Here we will only use PADI as the explanation.
PADI (Professional Association of Diving Instructors)
The Professional Association of Diving Instructors (PADI) was founded in 1966 and is currently the largest scuba diving training organization in the world, with over 180 countries introducing the PADI teaching system and over 90,000 PADI instructors worldwide. PADI's most important advantage is that the teaching theory and content are the same worldwide.
The order and level of diving certification
1.Open Water Diver (OW Diver)
Generally speaking, we are used to calling it OW; this is the most basic diving course; students can learn the most basic diving theory and diving skills, including five units of theory courses, five units of calm watercourses, and four open watercourses. Generally speaking, the diving theory course takes one day (including watching a video introduction, instructor theory explanation, and theory test), which can be completed in advance in China, followed by one day of calm water (pool) course and two days of open water (sea) course, with two dives each day. That is, the time in the water is a total of 3 days, but some dive stores are only two days, the price is cheap hundreds of dollars, of course, very attractive, I do not comment, I believe that everyone has a weigh-in their hearts.
2.ADVANCED OPEN WATER DIVER (AOW)
AOW, for beginner open water divers, offers training in different specialties such as top neutral buoyancy, underwater navigation, night dives, deep dives, wrecks, releases, etc. Two days to complete five open water dives.
LEFEET Hope you have a great diving experience!