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Answer Wiki. As John suggests, divers that ascend too quickly can get an air embolism. Bends (decompression sickness) is slightly different and requires a diver to have been at some depth breathing a nitrogen mixture for some time. You can get an embolism even if you havenât been down long enough to need decompression stops.
Similar rules will apply to any new set of dive tables or dive computer that you might use to calculate your dive times. 1  Ascend no faster than 9 meters (30 feet) per minute. This is 0.3 meters (1 foot) every two seconds. 2  Use the exact or the next greater number listed in the table for your depth.