A stop made within 5 and 6 metres / 15-20 feet for three or more minutes at the end of a dive for additional safety. The safety stop is recommended after all dives (air supply and other considerations allowing) and required on dives to 30 metres/ 100 feet or greater, and dives coming close to the no decompression limits.

Dive tables based Dr. Bruce Wienke's Reduced Gradient Bubble Model (RGBM), suggest deeper initial safety stops. It is recommended that all recreational diving incorporate a one minute deep stop at a depth half that of the maximum, followed by a two-minute stop at 5-6 metres/15-20 feet.

Scuba Diving Encyclopedia

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