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On a large pile of smokin' A'a, the most isolated population center on the face of the earth. 2,175 miles to Alaska, 2,390 miles to California; 3,850 miles to Japan; 4,900 miles to China; 5,280 miles to the Philippines.
Thal. You would seriously continue a dive without the ability to measure the volume of your gas?
Yup. Why is everyone terrified over something that use to be SOP?
Originally Posted by Splitlip
What might happen if your buddy had some type of failure that required she share your gas? Would you have enough?
Probably. I mean not if I were in a cave or a wreck, but in a benign ocean, sure.
Originally Posted by Splitlip
A lot of people adhere to the rule of thirds. Without an spg how would one know for sure if the turn pressure was reached. I've seen much discussion re not sharing a computer. I can't imagine sharing an spg.
A lot of people pretend to make it more exciting. Rule of thirds for a shallow resort dive is way over the top and rule of thirds for a real challenging dive is likely insufficient, so let's drop the rule of thirds.
I'd guess that I've made almost as many dives without either of us having an SPG as I have using one (well, two). If I run out of air, we share air and go up. If my buddy has a failure and I still have air, we share mine. If we run out of mine we do a free ascent. Whats the big deal?
I refuse to believe that corporations are people until Texas executes one.
"Too often ... people enjoy the comfort of opinion without the discomfort of thought" - Leapfrog
"They are the McDonalds of diver certification. Quick, inexpensive and tasty. Pardon me for saying so, but I also believe it to be a health hazard." - DCBC
"It truly does boil down to motivation ... if you believe something is hard, or unnecessary to learn, you won't learn it ... even if it's completely within your capability" - Bob (Grateful Diver)
Thalassamania, I bet you have your Unit Diving Supervisor spinning in his grave!
You know a functioning SPG is required by AAUS and NOAA as part of the minimum standards for the NDP. don't feel bad though, I have back-slid as well, I no longer have SPG's tested annually. So I am also guilty of thumbing my nose at always complying with them in all my diving.
Last edited by diverdoug1; June 13th, 2012 at 01:08 AM.
On a large pile of smokin' A'a, the most isolated population center on the face of the earth. 2,175 miles to Alaska, 2,390 miles to California; 3,850 miles to Japan; 4,900 miles to China; 5,280 miles to the Philippines.
Work and play are different arenas with different requirements and rules.
Plus the load is entirely different. At work you have the work load, and that can often suck up all the available task load and all of your attention, I don't mess with that.
I refuse to believe that corporations are people until Texas executes one.
"Too often ... people enjoy the comfort of opinion without the discomfort of thought" - Leapfrog
"They are the McDonalds of diver certification. Quick, inexpensive and tasty. Pardon me for saying so, but I also believe it to be a health hazard." - DCBC
"It truly does boil down to motivation ... if you believe something is hard, or unnecessary to learn, you won't learn it ... even if it's completely within your capability" - Bob (Grateful Diver)
I guess the big deal (for many people) is that being able to do a OOA swimming ascent from 'x' meters doesn't justify not having the ability to read your gas. Your reserve is not just your reserve.
J Valves were replaced with SPGs for a reason- it wasn't just to sell more equipment..... the wireless transmitter that works sometimes however.....
Work and play are different arenas with different requirements and rules.
Plus the load is entirely different. At work you have the work load, and that can often suck up all the available task load and all of your attention, I don't mess with that.
The task loading is why I like my wrist mounted wireless AI computer when I am shooting photos. When the wireless link is working, I just need a quick downward glance to check gas reserves. I feel my personal task loading is as high with my U/W photography as it was with my working / scientific dives. I wonder if a "chirp" type frequency modulation for the AI transmitters would make them less suceptible to RF interference. This would maybe raise the price point on the units too much.
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Originally Posted by Splitlip
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