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From: carey@uiucdcs.CS.UIUC.EDU
Newsgroups: net.rec.scuba
Subject: Snorkels
Message-ID: <12000005@uiucdcs>
Date: Mon, 28-Oct-85 13:14:00 EST
Article-I.D.: uiucdcs.12000005
Posted: Mon Oct 28 13:14:00 1985
Date-Received: Wed, 30-Oct-85 05:08:19 EST
Lines: 19
Nf-ID: #N:uiucdcs:12000005:000:861
Nf-From: uiucdcs.CS.UIUC.EDU!carey    Oct 28 12:14:00 1985



When the wide-bore snorkels first came out they were supposed to make
things easier by providing less resistance to the air flow and enabling
the diver to get more air faster.
I just read in an article that a disadvantage is that it increases your
"dead air" space--that is, there is more air that does not get recirculated,
since there is a larger volume of air inside the snorkel.
Has anybody experienced a problem like this?  What kind of tradeoff is
this?  After all, it would be less tiring to have an easy draw of air.
I think I would rather have to take 10 easy breaths than 8 restricted
breaths for the same amount of oxygen, but I have never tried the
wide-bore style.  I wouldn't like to black out from lack of oxygen (or turn
blue in the face)

--John Carey

-- {ihnp4,convex,pur-ee}!uiucdcs!carey   carey%uiuc@csnet-relay.arpa
   carey@CS.UIUC.EDU