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I may be wrong but wouldn't the "deep washout" constitute your first stop. Actually, last year I did come across an article somewhere which talked about the benefits of a stop at 50 feet during decompression diving. Even a stop for two minutes on air seems to decrease the required decompression time according to the computer I'm using. And before anybody gets itchy typing fingers I carry a depth guage/bottom timer and tables for redundancy. AndyHall68@ao*.co* wrote: > > I first came across the idea of a deep washout stop on a tri-mix course I did > towards the end of last year. As far as I have found out by asking around the > people I know it is an idea that seems to have come out of using the > proplanner software to calculate decompression tables and is something that > was originated by Kevin Gurr (IANTD UK). I was wondering if anyone else is > using this technique, if it is widely known, or if it has a different name > and is used elsewhere. > > A deep washout is basically a 3 minute stop on travel mix at the 1.6pp02 > depth for the travel mix. For example a 3 minute stop at 30m (90ft) on 40% > Nitrox. This has the effect of significantly reducing the depth of the first > stop. On an eight minute bottom time on trimix the first stop without a deep > washout would be at 21m ( 63ft). After a deep washout the first stop is at 9m > ( 27ft). I can provide a more detail on the whole dive profile if anyone is > interested. > > Cheers, > Andy H. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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