Jay Cohen
Registered
My goals this Spring Summer is to continue to gain dive experience by diving as much as possible, in varied conditions and with as many experienced divers that I can find, beg, borrow, bribe
With that said, Ill be doing a bunch of April/May dive in local eastern Ohio quarries, with the intent of heading to the Great Lakes and a trip to North Carolina during the summer.
I really like the idea of planning a dive and understanding gas management, both of which are being discussed in my Intro to Tech course(doing for continuing ed, not planning Deco dives near future)., vs just jumping in the water and swimming around.
So how anal is this???
Plan A: Dive buddy says lets kick out to the Tubes(max dept 60Ft), come back, we have 2800 psi, if one of us gets to ½ or 1400 before the other, signal, well turn around.
Plan B: I say, well, Tubes sounds good, lets shoot a bearing, I estimate its 800 meters out about a mile round trip, since I want to surface with 500 psi in my tank, and Im your back up air source, Im going to keep 500 for you, since I know my kick cycle rate for 100 meters and my SAC for 60 feet, Im going to estimate my gas usage, since I have my computer set for gauge mode, I plan to turn at 20 minutes, so rough estimates starting psi is 2800, plus 1000 for ending balance in tank, 3800 used, I plan to turn at 1900(not a factor for me, I'm on gauge mode) I would also consider the descent/ascent rate with safety stop.
Im thinking by dive buddy is going to look at me like Im crazy, since were in a rather controlled environment and a CESA is always possible. I know this might be over kill in a quarry at only 60 ft, but how do you practice gas management/dive planning, as you got to start somewhere.
Thanks in advance for any replies to this very newbie question.
With that said, Ill be doing a bunch of April/May dive in local eastern Ohio quarries, with the intent of heading to the Great Lakes and a trip to North Carolina during the summer.
I really like the idea of planning a dive and understanding gas management, both of which are being discussed in my Intro to Tech course(doing for continuing ed, not planning Deco dives near future)., vs just jumping in the water and swimming around.
So how anal is this???
Plan A: Dive buddy says lets kick out to the Tubes(max dept 60Ft), come back, we have 2800 psi, if one of us gets to ½ or 1400 before the other, signal, well turn around.
Plan B: I say, well, Tubes sounds good, lets shoot a bearing, I estimate its 800 meters out about a mile round trip, since I want to surface with 500 psi in my tank, and Im your back up air source, Im going to keep 500 for you, since I know my kick cycle rate for 100 meters and my SAC for 60 feet, Im going to estimate my gas usage, since I have my computer set for gauge mode, I plan to turn at 20 minutes, so rough estimates starting psi is 2800, plus 1000 for ending balance in tank, 3800 used, I plan to turn at 1900(not a factor for me, I'm on gauge mode) I would also consider the descent/ascent rate with safety stop.
Im thinking by dive buddy is going to look at me like Im crazy, since were in a rather controlled environment and a CESA is always possible. I know this might be over kill in a quarry at only 60 ft, but how do you practice gas management/dive planning, as you got to start somewhere.
Thanks in advance for any replies to this very newbie question.