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MikeFerrara:James, Are you a PADI instructor?
Among others.
As mentioned, there are many ways to manage your gas without knowing your SAC rate. It's a tool, as are experience, the rule of thirds, etc. You don't have to take Deep or dive deep to be a master diver. Some people do thousands of dives and never go deep.MikeFerrara:As I recall (I'd need to walk out to the garage to look it up), SAC is covered in the deep diving chapter of the AOW text. Obviously even PADI doesn't think that it's a "tecnical only" piece of knowledge. PADI just stops short of applying it to nay real gas management calculations. they also stop short of making the students demonstrate that they can apply that knowledge to a real dive.
I think it's well established in this thread that the term master is just a lable and does not carry the same connotations as it does in some fields, such as "chess master" or "master sommelier". My point is that it makes no sense to pick 1 arbitrary point such as SAC rate to determine who is and who is not a master diver.
The question, and I assume from the way it was asked that the OP is a PADI diver, is wether to go MD or DM. The answer is that one is a card and the other has some training involved.
The ongoing discussions as to the value of both are somewhat germain to the initial topic, however a big hoopla over wether knowing SAC rates should/shold not be required to become a master diver really are way off topic.
James