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Let's appeal you are diver in town!

Certification card

Relationship between dive profile and nitrogen accumulation during descent

Relationship between dive profile and nitrogen accumulation during ascent

Leisure diving and dive table

Leisure diving and dive computer

How the dive computer works 1

How the dive computer works 2

How the dive computer works 3

Make a dive plan

Dive computer display 1

Dive computer display 2

Precautions for use

Emergency response


■Ceiling depth

If decompression stop is required, the depth that can shorten the decompression time is the ceiling depth.
Nitrogen is more likely to be discharged from the body as the water depth becomes shallower, but at a water depth shallower than the sealing depth, nitrogen will bubble and cause decompression sickness.
If the water surface is rough due to the weather and the body is not stable and you cannot stop for decompression at the ceiling depth of 3 m, the decompression time is displayed even at a water depth of 5 m which is deeper than the ceiling depth.


■Floor depth

If a decompression stop is required, the floor depth is the depth than which the decompression time will not be long unless you go deeper.
This depth is the limit depth required to discharge nitrogen from the body.
If you go deeper than this depth, the decompression time will become longer and longer.
The decompression stop can be performed between the ceiling depth and the floor depth, but in order to shorten the decompression time, the water depth should be as close as possible to the ceiling depth.



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