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 Trimix Gas Mixture containing Helium, Oxygen and Nitrogen. Heliox Gas Mixture containing Helium and Oxygen. Nitrox Gas Mixture containing Nitrogen and Oxygen. TC Tissue Compartment, is a logical tissue interface to various tissues in the human body. Since each tissue has its own gas dissolving time, they have been categorized into compartments. 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 "rebreather 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)