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rnf@sp*.tb*.co* sez: > Rich Pyle's comment about ANY dive below the point where a diver can make a safe > ascent on one breath is also excellent. I think that all divers should be trained > to use a pony bottle on dives below 50-60 feet. I certainly do myself, and I > consider it a mandatory piece of safety equipment for dives in that range. I like Rich's comment, but I like to quantify it a little more: o I consider any dive to depths shallower than my max freedive depth a pure recreational dive, *provided* no penetration! o I consider a dive between max freedive depth and twice max freedive depth to require total redundancy in gas supply. o Dives deeper than twice max freedive depth are considered to require "technical" preparation, etc. Note especially that the above only apply for no overhead (real or virtual) situations! -frank -- fhd@in*.ne* | The future of cartography lies in transcending the dichotomy between 1 212 559 5534 | the utility of the subjective and the authority of the objective. 1 917 992 2248 | -- "The Power of Maps" _Scientific American_ May 1993 1 718 746 7061 |
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