Altitude diving is significant in recreational diving because the decompression stops used for dives at altitude are different from those used for the same dive profile at sea level.
Decompression sickness is caused by the absorption and release of inhaled gases under differing pressure environments and changes of pressure. At altitude, atmospheric pressure is lower than at sea level, so surfacing at the end of an altitude dive leads to a greater reduction in pressure and so more risk of decompression sickness.
Normally dive computers detect changes in altitude and automatically adjust their calculation of a safe decompression regime for a dive at that altitude. If an altitude-aware computer is not used, altitude-aware decompression tables must be used.
Altitudediving is significant in recreational diving because the depths and durations of decompression stops used for dives at altitude are different from those used for the same dive profile at sea level.
At altitude, atmospheric pressure is lower than at sea level, so surfacing at the end of an altitudedive leads to a greater reduction in pressure and so more risk of decompression sickness.
Normally dive computers detect changes in altitude and automatically adjust their calculation of a safe decompression regime for a dive at that altitude.
Recreational diving is a type of diving that uses SCUBA equipment for the purpose of leisure and enjoyment.
Technical diving and use of rebreathers are increasing, particularly in areas of the world where deeper wreck diving is the main underwater attraction.
Generally, recreational diving depths are limited to a maximum of between 30 and 40 meters (100 and 130 feet), beyond which a variety of safety issues make it unsafe to dive using recreation diving equipment and practices, and specialized training and equipment for technical diving are needed.
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