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The RDP was developed by DSAT and was the first dive table developed exclusively for no-stop recreational diving. [2] There are four types of RDPs: the original table version first introduced in 1988 along with a circular slide rule version called The Wheel, followed by the eRDP, an electronic version introduced in 2005 and the eRDPML, an ...
This is the standard configuration for single or twin cylinder recreational diving, and for much technical diving in open water. [ 17 ] [ 2 ] Side mounting suspends the primary cylinders from the harness at the diver's sides: usually two cylinders of approximately equal size would be used.
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.
Gas blending for scuba diving (or gas mixing) is the filling of diving cylinders with non-air breathing gases such as nitrox, trimix and heliox. Use of these gases is generally intended to improve overall safety of the planned dive, by reducing the risk of decompression sickness and/or nitrogen narcosis , and may improve ease of breathing .
Deep, decompression diving is necessarily required to effect penetration diving on the WKPP. Extended dive duration and surveys of previously unexplored parts of the cave system exposed divers to unprecedented exposures. Diving of this type is subject to increased level of risk and increased risks require more stringent mitigation.
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The profile of a dive is the variation of depth, measured as ambient pressure, over time during that dive. The actual location of the diver at any time is generally not considered, as the dive profile is a tool for dive planning and decompression status calculation.
However, when diving with a buddy with a higher breathing rate or a different volume of gas, it may be necessary to set one third of the buddy's gas supply as the remaining 'third'. This means that the turn point to exit is earlier, or that the diver with the lower breathing rate carries a larger volume of gas than they alone require.