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Sorry, I meant to type 63. They do have a lot of oddball sizes in the shorter tanks, though, I've noticed, ESP in other countries.
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Too freaking funny. Those old fangled tables were ALSO based on "maths and tissue groups". But we get it: you hate new.Plus we don't trust these new fangled tables with all their maths and tissue groups
I've gone past NDLs many times while diving anAL 60! Multiple, deep dives on air, small diver good with air, not hard at all. I'd probably go over a lot more if I used an 80 routinely but i'd have to solo as any buddy vie ever been with would be out of gas. An idea of how tables work, a computer and a buddy using a video get me out of the water long before that AL 60 runs out!
Tables are important. Just like learning basic arithmetic is important. It's the basic understanding of how a table works that helps you understand how to use the computer.
Oh, and for the deco times- I've gone as much as a 30 minute requirement and was able to finish up with plenty of gas left in my AL 60 so not understanding tables and diving without a computer/table would be deadly, IMHO.
The basic digital calculator is a convenience but should never precede or replace fundamental knowledge & comprehension of analog four-operator arithmetic by hand.Again, tables and computers are based on algorithms that are in turn based on tissue group strategies. One represents N2 loading as a letter group, while the other uses a bar graph.
Which is easier on a car to understand?
Your Gasoline group is
K
or...
I would suggest that if you REALLY understand how your table works, then you would be able to generate one on the fly. No, not simply regurgitate it, but generate it.
..........We all carry computers to record our time and depth but we don't bother paying attention to anything else it tells us .........
The basic digital calculator is a convenience but should never precede or replace fundamental knowledge & comprehension of analog four-operator arithmetic by hand.
The basic personal dive computer (PDC) is a convenience but should not precede or replace fundamental knowledge & comprehension of analog dive tables.
So? If my NDL is way out of line with it, you can bet I'm gonna take a look and see why.The 120 rule that you can use & generate "on-the-fly" is actually an applied analog heuristic algorithm & mnemonic taken from the old NAUI (and US Navy) NDL Air Dive Table.
Wait, I almost missed it, but we have a double shenanigans here. In his endeavor to mischaracterize tables, he has called them "analog", which they are not. Your mechanical SPG is analog: it has a pionter. There is no pointer on a table. It measures nothing. Your table is based on the very same algorithms that my PDC is based on. The difference, is that there is no human error introduced on time or depth with my PDC. You can count on it with table usage. In actuality, the bar graph showing my N2 load on my PDC is a digital rendition of an analog gauge. Ergo, the PDC is far more analog than a table.analog dive tables.
Your mechanical SPG is analog: it has a pionter. There is no pointer on a table. It measures nothing.