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MSMAIL%"HeimannJ@WL* SCSD"%GTEC3.dnet@gt*.co* writes: > > [...] use a reel of some form and a liftbag. In NY and NJ, people > tend to use a long spool with about 250 ft of sisal rope; you can see this in > typical underwater pictures of people on the Doria. I find it easier to just > carry one or more Dive Rite reels, which double as penetration lines. Of course the reason they use sisal is that it decays, and doesn't leave nondecaying nylon ropes all over the wreck. >Some people who decompress on O2 combine their 10 and 20 foot stops @ 20 feet. > This is referred to as "pulling a stop" and is actually more efficient. I've seen Gentile say this in his "Ultimate" wreck diving book. The quote, from memory, is "The increased pressure gradient [of hanging at 20 instead of 10fsw] actually causes the nitrogen to come out of solution faster." Does this make sense? Assuming pure O2 decompression, why would decompressing at 20 be faster than at 10fsw? The nitrogen is responding to the ambient pressure (assuming inspired N2 pressure constant) directly: why would it come out faster at a higher ambient pressure? Cheers, David Story NAUI AI Z9588, PADI DM 43922, EMT story@be*.wp*.sg*.co* Oxygen is a drug in California.
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