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I just took a nitrox class last weekend (have yet to do the checkouts,
but the classroom work is done), with John Comly at Blue Abyss in NJ (he's
an IANTD instructor). My class was a little unusual, since I ended up
being the only student (with one instructor and an assistant instructor
for about half the class :-) & I had done a lot of reading on this subject
before the class, but we spent about 6 hours in the classroom pretty much
going through the outline in the IANTD book, which consists of an introduction,
physics of nitrox, EAD (equivalent air depth) concept, oxygen (physiological
and operational safety concerns), equipment, and USN & NOAA air/nitrox
tables. John used examples from his personal experiences to illustrate
many of the points in the manual, which I found particularly interesting &
informative; he also put extra emphasis on safety -- both operational
(care & feeding of high pressure oxygen) and physiological (dangers of
high PO2's, dive & gas planning, etc.). This is all concerned with NOAA
Nitrox I & II (32% and 36% oxygen), BTW. Other nitrox mixes are covered
in a separate "technical nitrox" class.
As for the in-water part (IANTD requires two dives -- one nitrox and one
air), I don't expect it to be much more than experience using the
appropriate tables, analyzing the gas, and a chance to dive with a pretty
cool guy.
--tab
--
Tracey Baker tab@pa*.co* / tab@go*.ho*.at*.co*
"We're all just rats running long lost races..."
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