Half time
HP
Multi level dive
Nitrox
NOAA
No decompression time
No decompression dive
NO DEC TIME OEA = EAN = EANx
OLF
OTU
Oxygen tolerance unit Oxygen limit fraction
After a change in ambient pressure, the amount of time required for the partial pressure of nitrogen in a theoretical compartment to go half way from its previous value to saturation at the new ambient pressure.
Abbreviation for high pressure (= cylinder pressure).
A single or repetitive dive that includes time spent at various depths and whose no decompression limits are therefore not determined solely by the maximum depth attained.
In sports diving, refers to any mix with a higher fraction of oxygen than standard air.
United States National Oceanic and Atmospheric Administration.
The maximum amount of time a diver may remain at a particular depth without having to make decompression stops during the subsequent ascent.
Any dive which permits a direct, uninterrupted ascent to the surface at any time.
Abbreviation for no decompression time limit.
Abbreviations for oxygen enriched air nitrox.
Abbreviation for oxygen limit fraction.
Abbreviation for oxygen tolerance unit.
Used to measure the
A term used by Suunto for the values displayed in the oxygen toxicity bargraph. The value is either the CNS% or the OTU%.
