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Do not translate this file.
This just tries to collect some of the terms you will run into
when translating Subsurface
SAC Surface equivalent air consumption
The air consumed during a dive at different
depth is adjusted for depth/pressure to give
an easy to understand air consumption number
OTU Oxygen Toxicity Unit - a measurement how O₂
negatively impacts the lung tissue. This number
has no unit, the values are rather abstract
CNS Central Nervous System Oxygen Toxicity - a
measurement how O₂ negatively impacts the
central nervous system - this is a percentage
or a number <= 1
maxCNS the highest CNS value during a dive
PO2, PN2, PHe These are all partial pressures of the three
PO₂, PN₂ gases Oxygen (O2 or O₂), Nitrogen (N2 or N₂)
and Helium (He).
O₂%, He% The fraction of Oxygen and Helium in a gas.
The partial pressure is therefore the pressure
of the gas times the fraction of the specific
component. E.g. a gas with O₂% = 30 (also called
30% Nitrox or EAN30) at 30m depth (where the
pressure is 4atm) therefore has a PO₂ of
4 * 0.30 = 1.2
CSV Comma separated values - a common file format
TSV Tab separated values - a common file format
Stopdepth The depth at which the diver needs to wait for
some time in order to "off-gas". Also deco stop.
WorkPress Working Pressure of a tank - the pressure it should
be filled to
StartPress Starting Pressure - at the beginning of a dive
EndPress Ending Pressure - at the end of a dive
Switch at the depth at which the diver wants to switch to
a certain gas
Device ID Unique ID for a specific dive computer
trip dives are grouped into "trips" based on their
individual start time. As soon as there are more than
48h between dives the automated algorithm will start
a new trip
UDDF standardized file format
GFHigh, GFLow Gradient Factors of the Buehlman algorithm. These
impact the way the deco obligations are calculated
in Subsurface. Typically these are between 20 and 100.
Lower is more conservative (i.e., more deco). It's
possible to use values below 20 and above 100 in
certain circumstances, but 70/30 is much more common.
CC Closed circuit - short for "repreather diving"
OC Open circuit - traditional scuba
CC Set Point Rebreathers often are run with a fixed PO₂ - the "set point"
Bailing out to OC
in a rebreather dive the dive switches to their emergency
OC equipment
Auto Group automatically arrange dives into trips
Ceiling when the diver is "in deco", i.e., when the diver cannot
directly ascend to the surface but has to put in "stops"
to give their body time to "off gas" (reduce the amount of N₂
and potentially He in the body), there is a minimum depth
they should not climb above - that's the ceiling. Often a
diver will do a deco stop well below the ceiling
Viz short for visibility
belt, ankle weight system types - a backplate is used mostly by tech
backplate, divers to mount the tanks on (recreational divers have a BC,
integrated, tech divers usually a backplate and a wing)
clip-on
rbt remaining bottom time
rgt remainint gas time
workload is this a strenous dive?
deepstop stop well below the ceiling
safety stop stop at the end of a recreational dive, typically
3 minutes at 5 meters
below floor event showing dive is below the depth where the dive
is acruing additional deco time
OLF Oxygen Limit Fraction; Suunto specific term for CNS
rgbm reduced gradient bubble method - alternative deco
algorithm
non stop time amount of time the diver can stay at the current depth
NDL without going into deco
EAD equivalent air depth
END effective equivalent Nitrogen depth
EADD equivalent air density depth
TTS time to surface (including deco stop and reasonable
ascent speed)
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