Diving FAQ

Knowledge

Diving FAQ

How long can I dive with a bottle of air cylinder?
There is no fixed answer. Everyone has different physique and technical experience and will have different results. The most important thing is that the depth of the dive affects the rate at which the diver consumes air.

water deep diving time
0-10m 120 minutes
10-20m 60 minutes
20-30m 40 minutes
30-40m 30 minutes

tide
We all know that it is affected by the moon, but tides are very important to divers. Usually, there will be a rise or fall once in 6 hours. Among them, there are two large high tides a month (relatively large low tides). Divers must be careful. At this time, the current will be particularly strong.

Visibility
here refers to the degree of transparency in water. In general, winter is better than summer, morning is better than afternoon, reef shore is better than sandy shore, and it is better when the tide changes.

Air embolism screen plug (embolim)
This is the diving disease that divers should pay attention to most. The diver breathes the high-pressure air that is supplied through the air cylinder under water. (The role of the regulator) If the high-pressure air is full, it will rise immediately, which will cause the alveoli to rupture (the surrounding water pressure after the rise is higher than that in the lungs. Low air pressure), the air in the lungs will enter the blood, stopping blood circulation. Therefore, when ascending, it is not possible to stop breathing, but to maintain a large and slow breathing.

Nitro
Normal divers will have this phenomenon at a depth of about 30 meters. Nitrogen intoxication can make people lose their ability to think and judge. In severe cases, they can lead to death.

Diving time safety watch

water depth time limit water depth time limit
 10 m without 27 m 30 minutes
 12 m 200 minutes 30 m 25 minutes
 15 m 100 minutes 33 m 20 minutes
 18 m 60 minutes 36 m 15 minutes
 21 m 50 minutes 39 m 10 minutes
 24 m 40 minutes 42 m 10 minutes

This watch is only suitable for those who have never divers within 12 hours.

decompression sickness
If the nitrogen cannot be eliminated from the body, it will turn into small bubbles to destroy the body tissues and hinder blood circulation, so please follow the diving safety schedule.

carbon dioxide poisoning
There will be breathing acceleration. Headaches and vomiting. When diving, try to avoid stopping breathing (in order to dive for a longer time) or doing too intense movements in deep water.

poisoned by carbon monoxide
There is no carbon monoxide in the normal air cylinder, but avoid filling in unfamiliar places (when the compressor is filling, carbon monoxide is filled at the same time due to poor exhaust).