ScubaInChicago
Contributor
I was reading the Ratio Deco thread and spun off this thread to not Hi/jack. After looking over Blackwood's chart http://www.scubaboard.com/forums/5053199-post32.html
I had a couple of questions on how it translated to our latest T/1 class and get a feeling for how our class teachings compare to the teachings of past.....Please let me know either good or bad how it translates..
-We were told to take advantage of the high PPo2 oxygen window at the 70' gas switch and to reverse engineer our curve from the 70'-30' then split 50/50 the deco from 20'-surface with the 70' mark getting the most time and 30' the least....20'-surface again because of the greatest pressure change to the surface.
ex of 30 min deco from 150':
150-110' assent rate of 30'/min
110' 15 sec stop and 15 sec slide
100' "
90' "
80' "
70 - 5
60 - 4
50 - 3
40 - 2
30 - 1
------------
20 - 10 (10'/min to surface assent rate)
10 - 5
-told to plan no more than 2/3rd's for cf consumption of deco gas bottle.
I had a couple of questions on how it translated to our latest T/1 class and get a feeling for how our class teachings compare to the teachings of past.....Please let me know either good or bad how it translates..
-We were told to take advantage of the high PPo2 oxygen window at the 70' gas switch and to reverse engineer our curve from the 70'-30' then split 50/50 the deco from 20'-surface with the 70' mark getting the most time and 30' the least....20'-surface again because of the greatest pressure change to the surface.
ex of 30 min deco from 150':
150-110' assent rate of 30'/min
110' 15 sec stop and 15 sec slide
100' "
90' "
80' "
70 - 5
60 - 4
50 - 3
40 - 2
30 - 1
------------
20 - 10 (10'/min to surface assent rate)
10 - 5
-told to plan no more than 2/3rd's for cf consumption of deco gas bottle.