GLOSSARY

Altitude dive

Ascent rate

ASC RATE

Ascent time

ASC TIME

Ceiling

Central nervous system toxicity

CNS

CNS%

Compartment

DAN

DCI

DM4

Decompression

Decompression range

A dive made at an elevation greater than 300 m/1000 ft above sea level.

The speed at which the diver ascends toward the surface.

Abbreviation for ascent rate.

The minimum amount of time needed to reach the surface on a decom- pression stop dive.

Abbreviation for ascent time.

On a decompression stop dive, the shallowest depth to which a diver may ascend based on computed nitrogen load.

Toxicity caused by oxygen. Can cause a variety of neurological symptoms. The most important of which is an epileptic-like convulsion which can cause a diver to drown.

Abbreviation for central nervous system toxicity.

Central nervous system toxicity limit fraction. Also note Oxygen Limit Fraction

See "Tissue group".

Abbreviation for Divers Alert Network.

Abbreviation for decompression illness.

Suunto DM4 with Movescount, a software for managing your dives

Time spent at a decompression stop, or range, before surfacing, to allow absorbed nitrogen to escape naturally from tissues

On a decompression stop dive, the depth range between the floor and the ceiling within which a diver must stop for some time during ascent.

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Suunto D6I manual Glossary, DAN DCI DM4