What is the difference between ow and aow in diving research?

Many diving research partners must first understand what ow is and what aow is, and there are matters needing attention about the prices of the two exams. Some props of diving should also be known, so that they can know the theoretical knowledge before they can actually operate.

What are OW and AOWOW? The maximum diving depth AOWOW:OPENWATERDIVER can reach 18m. You need to complete at least 4 open water diving trainings.

AOW: advanced open water

Divers (senior divers in open waters) can reach a maximum depth of 30 meters after completing training. You need to complete at least 5 open water diving trainings.

The premise of learning AOW is to complete OW first. Due to the limited depth, many good diving spots require divers to hold at least AOW certificates before diving.

In PADI's training standard,

The minimum age of OW is 10. It should be noted that OW can only be older than 10. 10- 12 years old The maximum depth is 12 meters.

The minimum age of AOW is 12 years old, and it must be 12 years old. The maximum depth before 15 years old is 2 1 m.

Why do you want ow and aow? How much does a diving card weigh? Can't you dive in many places without a diving license? In fact, you can experience diving without a diving license. Generally speaking, there are tourism projects that do not need diving license, but there is a depth limit without diving license, which does not exceed 10 meter. The cost of diving ranges from 300 yuan to 700 yuan. With a diving license, the general diving fee is only 100 to 300 yuan, and you don't need a coach. You can get into the water as long as you have a diving companion (some places need a diving guide to follow). Usually, the beautiful scenery of the seabed will appear at a depth of less than 20 meters, so in order to dive more freely and see more beautiful scenery, a diving certificate is essential.

Tips:

Because with the increase of diving depth and underwater residence time, nitrogen will gradually dissolve in tissues and cells. During the ascent of divers, nitrogen will be released from tissues and cells due to the pressure drop. If it rises too fast, it will hinder this process and there is a risk of decompression sickness. This is also the reason why 18 hours after diving can't fly.

What do you need to know about the specific content of OW?

The first stage is the knowledge of the whole OW diving process, including diving knowledge, equipment introduction, how to balance ear pressure, how to decompress, stay safely underwater, potential dangers, diver ethics and so on.

The second stage is swimming test, which can swim 200 meters continuously in the pool, float 10 minute, snorkel and touch the bottom of the pool for 2 meters. This point: students who fail the exam cannot continue their studies!

Then the following are the knowledge points and test sites that need to be recorded in a notebook:

Buoyancy vest deflates;

Mirror drainage;

Ventilation and drainage;

Neutral buoyancy;

Leg menstruation is relieved;

Kick up;

A three-minute safe stay;

Inflate BCD on the water surface to establish positive buoyancy;

Wear of counterweight;

CESA's emergency rise;

Fundive-finally you can experience the fun of diving.

Before attending the AOW course, you can brush a few more bottles before starting the next AOW course. In order to get tickets for deeper waters, we can wear super-easy diving computer watches.

Introduction of diving point

Turtle Island, with its natural beauty, especially all kinds of underwater creatures and colorful coral reefs, quickly swept the world. It soon became a famous tourist resource in Thailand, the largest and most famous diving training center in Southeast Asia, and many international diving organizations stationed there, making it a paradise for diving enthusiasts.

Attract novices and experienced people with the same hobbies to explore and learn.

Kotao

Because the diving training price is relatively low, it has become the largest diving training center in Southeast Asia. There are many international diving organizations here, which are known as a paradise for diving enthusiasts. 60% diving certificates in Thailand are issued from here. Since it is the largest diving training center in Southeast Asia, there are certainly many diving schools, and international diving training institutions such as PADI, SSI, CMAS, TDA and BSAC all have agent training institutions on the island. The specific training content and certification process are represented by diving schools. Basically, as long as it is an authorized training school, the training content is the same, but the level of each diving school may be different. Take PADI as an example, PADI

Palme d 'Or is the most advanced training institution, PADI5-StarIDCCenter.

Most of the diving in Similan is mainly by boat, which is highly mobile. You can fully understand the characteristics of each dive site. The underwater landscape of Smilan is composed of huge granite and rich coral, which is completely different from other diving spots. The main diving sites are: elephants.

The head rock is like the top rock, and the seabed hills are continuous, such as Shushan. Christmas Point Christmas Corner, Wonderland Reef, Eagle Rock.

Ray, Eden Garden is the only landing place in Milan. The Great Wall is magnificent, Li Sailiu.

Rocks may be the best place to watch whale sharks in the world. From 10 to May, whale sharks can be found almost everywhere. There is also the famous LeopardShark Leopardshark, and the guitar, a guitar shark that looks like rays and sharks.

Sharks, etc. , amazing and unforgettable.

Related question: Is it necessary to buy photographic equipment?

Underwater cameras are not recommended during OW.

First, ow belongs to the initial stage of entry, and coaches generally don't let students carry underwater cameras for training;

Second, ow training is intensive, so you may not have the mood and energy to take pictures.

Third, AOW has a special photography project, and you can take equipment to dive at this time.

If you want to take advantage of the gap between classes to shoot some big movies or shoot a very popular VLOG with an underwater camera in the swimming pool, then I might recommend renting an underwater camera, which is cheap, cost-effective and affordable. After all, when I really started, it might have been updated for several generations.

Other practical information

Study days: Generally, OW course lasts about 4 days;

Research price: 1800-2800 RMB.

AOW specific content

What do you need to learn?

The content of the AOW course can be selected by yourself, and the following five items are the most selected:

Diving at night (you can see many creatures that you can't see during the day, such as crabs, shrimps and other crustaceans. At the same time, because it is dark at night, you just need to prevent the light source brought by your flashlight from getting separated from your potential partner.

Shipwreck (the coach will tell you some basic knowledge about watching shipwrecks, so basically just follow the coach)

Deep diving (30 meters underwater, you should answer some simple questions to see if you are awake in deep water, and also experience how to balance the ear pressure in deep water and estimate your gas consumption rate. )

Underwater navigation (underwater navigation is to train everyone to locate underwater with the help of a compass. Generally, let everyone see if they can return to the starting point in a box downstream of the water. As long as they master the use of the compass, there is generally no big problem, and they can practice it several times on the shore first.

Release (it is a very comfortable experience to train yourself to go with the flow when the current is too big, and not to fight the current)

Finally, I passed the written test and completed the course of AOW.

Introduction of diving point

There is no good diving spot near Koh Samui itself, and the better diving spot is near Kochta, but Koh Samui in Kochta can provide a series of convenient accommodation and short trips to Kochta.

Phuket-Kata Beach is much smaller than Badong and Kalong, but it has two beautiful W-shaped bays. These two beaches are nicknamed "Big Kata" and "Little Kata" by the locals. Starting from Phuket, plan various diving trips, which take half a day to ten days. The nearest diving area is located near the west coast, where you can explore soft and solid coral reefs. invest

There is a good opportunity to take a close-up photo at a depth of 35 meters.

Phuket-Coral Island has beautiful scenery and is surrounded by various colorful coral reefs, making it the best choice for all kinds of water sports. There are many divers and paratroopers everywhere, and more people come here to enjoy the sunshine. Especially suitable for diving, and "walking in the sea"

(Walking on the sea) and elephant riding tourism projects.

Krabi Town is the center of this area and the scenery is very beautiful. If you don't want to go to crowded Phuket and phiphi Island, this must be the place you want to go. Including seven major islands, KohPoda,

Kohha, Kohsi, Kohyawabon, Kohdor, Kohtalu, G.K. Island and KohYawasam.

Diving in this area, you can find at least 200 kinds of fish and more than 80 kinds of corals. The best diving time is from June 1 1 to April of the following year. From the end of May, typhoon weather on the west coast of Thailand will reduce the visibility in this area, such as in Ao.

It will be reduced by 20% near the corridor. From June 5438 to 10, there will be heavy rain in this area.

The AOW mentioned above has a special photography project, and you can dive with equipment at this time.

To exercise your neutral buoyancy and other diving experience, honestly go to fundive to brush the bottle, and then you can enjoy the whole deep dive with your underwater camera! Deep diving must wear a waterproof shell!

Other practical information

Study days: generally about 2-3 days.

Research price: 1600-2600 RMB.

Equipment to be prepared 1.

Breathing head: General breathing regulator can provide sufficient air breathing at different water depths. Through the primary head and secondary head of the breathing regulator, the high-pressure air in the gas cylinder can be reduced to air that divers can breathe comfortably. Underwater will provide enough gas according to your needs. It consists of elementary and intermediate levels. The whole regulator shall be equipped with a standby air source (standby secondary).

2.

Buoyancy control suit (BC): The main purpose of buoyancy control suit is to provide auxiliary buoyancy control for divers when they are on the water or diving. When diving, buoyancy increases or decreases due to the pressure transition surface. By increasing or decreasing the air in the buoyancy control suit, divers can get the pleasure of neutral buoyancy (weightlessness) from the water.

3.

Elephant pull: Inflatable elephant pull is an inflatable airbag made of orange PVC, which is about one meter long. When encountering strong current or big waves, blowing upright on the water surface can make it easy for the crew to find it. It is an important equipment for asking for help and should be carried with you when diving.

4. Diving goggles

There is a mirror in the water and the scenery is blurred. Put on the mirror to help the eyeball restore autofocus function.

Goggles are made of tempered glass, including single lens and double lens, which can be equipped with myopia or hyperopia lens.

5. Surface breathing tube

Before and after diving, use the surface breathing tube when diving on the surface of the water to save the use of cylinder air, or use it when snorkeling, so that the underwater scenery can breathe smoothly.

6. diving shoes

The main function of diving shoes is to provide warmth and protection for feet. When diving, it is inevitable to walk on rocks and beaches. Wearing diving boots can prevent feet from being scratched by rough rocks and sharp shells and coral fragments on the beach, and can also prevent feet from being burned by hot beaches.

7. Frog shoes (frog shoes)

Frog shoes are used to help divers increase underwater propulsion. There are two kinds of frog shoes: one is for feet and the other is for open heels. Open-heeled frog shoes need diving shoes.

8. diving suit

As long as the diving suit is used to provide warmth and protection to the body. When on the water, avoid being scratched, stung by hydra or jellyfish and exposed to the sun. Diving suits are divided into two categories, dry clothes and wet clothes. Wet clothes are generally used for leisure diving, while dry clothes are used for diving in colder waters or ice diving.

Brush a certain number of bottles, and you can enjoy 70% of the world with a deep diving waterproof shell.