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> We have habitually now used 'deep washout' stops on trimix jumps. This is > always on an intermediate Eanx mix (usually the travel gas) and the stop > is always done at the maximum ppo2 (1.6bar) and is of a couple of minutes > duration. Assuming that you believe the schedules you are cutting work - > you must do else you would not use them! when this deep stop is put into > the profile it does numerically shorten the in water time. If used as an > addition to any schedule it follows that the safety edge is worth having. Isn't it amazing that people all over the world are independantly coming to similar conclusions about the value of adding extra "deep" stops to their program's suggested initial stop? Question: Do you mean that adding the stop to the decompression profile on the table-generating software (i.e., making a multi-level dive forcing a stop at a depth greather than the initial decompression ceiling), rather than switching mixtures at the same depth but proceeding directly to the first decompression stop suggested by the computer, actually calls for LESS in-water time? If the software follows Haldanian/Buhlmann math, I'm surprised at this result. In any case, I think the extra stop, regardless of whether or not it is accounted for by whatever generates the table, will ultimately reduce the probability of a DCI hit. Aloha, Rich deepreef@bi*.bi*.ha*.or*
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