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Question for the tech doubles divers. If the function of doubles is to increase the volume of available air for longer dive time, then why dive doubles AL40s instead of a single AL80 or HP80? Same volume and alot simpler & less expensive setup. I can understand doubles AL63 rather than one HP120 or 130 since those tanks are so long and heavy for a short person.
Does this seem like overkill just to brag that "See my gear, I am a tech diver" ? I observed this yesterday as I watched a PADI recreational Rescue class in 30 ft of water, the instructor (a short lady decked out to the max in all of her tech gear) was diving double 40's. I will add that the tanks were Nitrox 32%.
Can anyone share any good explanations?
Does this seem like overkill just to brag that "See my gear, I am a tech diver" ? I observed this yesterday as I watched a PADI recreational Rescue class in 30 ft of water, the instructor (a short lady decked out to the max in all of her tech gear) was diving double 40's. I will add that the tanks were Nitrox 32%.
Can anyone share any good explanations?