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> This book raises a question for me which historians or old-timers on the list
> may be able to answer.   Although there were divers going beyond 300 fsw on
> air in the 60's and 70's, I can't figure out how they planned their dives.  As
> far as I can tell they didn't have access to anything other than Navy tables. 
> Did they extrapolate stop times from these beyond 300 fsw?

Many of the people I know who were doing such dives back then were just
"winging it" for decompression.  By keeping their bottom times relatively
short, and through trial & error, they managed to stay alive (some of
them, anyway).  I know a guy who actually started using trimix in the
early '70s to explore deep reefs (~300-350fsw), but gave it up primarily
because of lack of good decompression tables.

By the way, I ordered a copy of Sheck's biography, and am now very-much
looking forward to reading it.

Aloha,
Rich


deepreef@bi*.bi*.ha*.or*

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