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The US Navy has used several decompression models from which their published decompression tables and authorized diving computer algorithms have been derived. The original C&R tables used a classic multiple independent parallel compartment model based on the work of J.S.Haldane in England in the early 20th century, using a critical ratio exponential ingassing and outgassing model.
NAUI's RGBM decompression tables were developed in 1997 exclusively for NAUI by Dr. Bruce Wienke and Tim O'Leary. [64] NAUI began publishing the only decompression manual with a full set of RGBM tables in 2000 for air, nitrox and trimix for both open and closed-circuit diving. Recreational RGBM no-calculation tables were published in 2001 ...
Algorithms based on these models produce decompression tables. [7] In personal dive computers, they produce a real-time estimate of decompression status and display a recommended ascent profile for the diver, which may include decompression stops. [11] Two different concepts have been used for decompression modelling.
A "no-stop dive", also commonly but inaccurately referred to as a "no-decompression" dive is a dive that needs no decompression stops during the ascent according to the chosen algorithm or tables, [11] and relies on a controlled ascent rate for the elimination of excess inert gases. In effect, the diver is doing continuous decompression during ...
VVAL 18 is a deterministic model that utilizes the Naval Medical Research Institute Linear Exponential (NMRI LE1 PDA) data set for calculation of decompression schedules. . Phase two testing of the US Navy Diving Computer produced an acceptable algorithm with an expected maximum incidence of decompression sickness (DCS) less than 3.5% assuming that occurrence followed the binomial distribution ...
Basic decompression theory and use of decompression tables is part of the theory component of training for commercial divers, [130] and dive planning based on decompression tables, and the practice and field management of decompression is a significant part of the work of the diving supervisor.
BSAC nitrox decompression tables The PADI Nitrox tables are laid out in what has become a common format for no-stop recreational tables. Dive tables or decompression tables are tabulated data, often in the form of printed cards or booklets, that allow divers to determine a decompression schedule for a given dive profile and breathing gas. [6]
Decompression (diving) – Pressure reduction and its effects during ascent from depth; Decompression sickness – Disorder caused by dissolved gases forming bubbles in tissues; Decompression theory – Theoretical modelling of decompression physiology; Dive computer – Instrument to calculate decompression status in real time