with regard to the recent deep air posts[bigvon, etc] my preference is for hyperbaric chamber dives. at 6ata ( equivalent to 50m/165fsw) you get a good taste of narcosis with no hazard. have someone video the proceedings. doing columns of arithmetic, i make no errors, but go much slower. doing work boards ( assemblages of nuts, bolts, beads & line, knots, locks, etc) takes much longer. at 140fsw my cognitive & fine motor skills degrade. limiting END to 100fsw in hazardous environments is a good idea. peteV saintpetersburgFL -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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