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On 2/23/00 gbashford@in*.co* wrote <<< ... I have a question about donating the long hose. Say you are in an overhead environment and have had to donate the long hose. If there was a restriction ahead needing to pass in single file. Who would go first? The donator or the diver breathing the long hose? ...>>> Hi Gavin, I have to admit that I was really surprised to see your posting on the techdiver list. From the question I can only assume that you are a recreational diver who is just starting to gather information. And as such I shall attempt to give you some information and also explain to you my quandary in answering. The basic answer to your question is that the receiver of the shared air (through the long hose) always swims in front through a restriction with the donor swimming behind. The reasoning behind this involves if the situation were reversed, it might be possible for the donor to continue going forward while the receiver had some type of problem, thus pulling the regulator out of the receiver's mouth. And even with touch contact communication, through a restriction it is quite possible that the donor might not know that it had happened, leading to a rather embarrassing situation when the receivers body had to be removed from the cave. And down here in the Yucatan we have learned that the tourists do not in general like to see body recoveries. On the other hand should the donor be in the rear, it is not likely that the receiver would swim off and leave the regulator behind. Nobody is that dumb. The reason I had a quandary in answering your question deals with my imagination as to why it was asked. If you have received any training in cave diving, then it is absolutely inconceivable to me that this subject would not have been covered in detail. It is not just an interesting topic but one which could not possibly have been omitted in any course at any level in cave diving. On the other hand if you have never had any cave training, then you have absolutely no business even considering passing through a restriction in an overhead environment, let alone sharing air at the time. That is unless you have an overriding desire to rapidly join and forever be at intimate peace with the universal oneness. If you have had extensive recreational scuba background and experience and you think you might be interested in overhead diving, then I invite you to seek out and speak with experienced cave divers for further information and training recommendations. But please never, and I mean never, venture into an overhead environment without the proper training and equipment. Suicide is still suicide, even if you want to call it "just taking a little look inside". Take care and safe diving, Scott -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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