I thought that a horizontal position during ascent and in particular for deco stops was to ensure that the whole of your body remained at the same pressure. So for a deco stop at 5m your legs lungs and head all stay at 5m, in an upright position there could be a meter difference between your depthgauge and a part of your body - would this effect the off gasing? Cheers Dene http://www.neoprene-dreams.co.uk -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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