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A Jonline may be used to fasten a diver to a shotline during a decompression stop. [85] A decompression trapeze or decompression bar is a device used in recreational diving and technical diving to make decompression stops more comfortable and more secure and provide the divers' surface cover with a visual reference for the divers' position. [85]
A conventional decompression profile, based on a dissolved gas model algorithm, will result in a diver ascending relatively quickly through shorter deep stops before spending a great deal of time at the shallower stops (resulting in a much sharper angle in the depth/time graph of the ascent profile), ratio deco will allow a diver to dynamically ...
One clip is fastened to the diver's harness, and the other is used to fasten the line to the shot line or anchor line. In current this relieves the diver from holding on to the line during the decompression stop, and the horizontal length of the line will absorb some or all of the vertical movement of the shot line or anchor line due to wave ...
The intended dive profile is useful as a planning tool as an indication of the risks of decompression sickness and oxygen toxicity for the exposure, to calculate a decompression schedule for the dive, and also for estimating the volume of open-circuit breathing gas needed for a planned dive, as these depend in part upon the depth and duration ...
The PADI recreational dive planner, in "Wheel" format. The Recreational Dive Planner (or RDP) is a decompression table in which no-stop time underwater is calculated. [1] The RDP was developed by DSAT and was the first dive table developed exclusively for no-stop recreational diving. [2]
A dive computer, personal decompression computer or decompression meter is a device used by an underwater diver to measure the elapsed time and depth during a dive and use this data to calculate and display an ascent profile which, according to the programmed decompression algorithm, will give a low risk of decompression sickness.
The first stop is midway between the depth at the start of ascent and the depth of the first decompression stop required by the program. The stop would be about 2–3 minutes long. The decompression profile is re-calculated including the deep safety stop in the profile (most software will allow for multi-level profile calculations).
A no-decompression dive, or more accurately, a dive with no-stop decompression, relies on limiting the ascent rate for avoidance of excessive bubble formation in the fastest tissues. The elapsed time at surface pressure immediately after a dive is also an important part of decompression and can be thought of as the last decompression stop of a ...