nereas
Contributor
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where do you come up with this crap? Seriously. A diver develops a problem at 100 ft that necessiates ditching of lead and you would want them to remain at 100 feet to breath down their tank (absorbing more nitrogen) before starting their ascent?
If necessary, and there were no choice.
Don't forget, the tank would bleed long before you reached the NDL. Then it would become much lighter. Unfortunately, with the 6 lb BPW, neutral buoyancy with this combo is the best that would be achieved.
Do the math. Did you forget that compressed air has mass? And weighs 0.08 lbs per cu ft?
Add this (80 cu ft x 0.08 lbs/cu ft = 6 lbs) to the SS backplate (6 lbs) and to the add-on (6 lbs), and you get 18 lbs of nonditchable weight, not even closely offset by the positive buoyancy of an aluminum tank. And not to mention a steel tank, which would be even worse.
I would like to see even you, Dumpster, "swim up" 18 lbs of non-ditchable weight with a ruptured wing.
Ergo, a steel tank is out of the question, the 6 lb add-on has got to go, and then with an aluminum tank, given time, the rig may become neutral again, if the wing ruptures, and if the rest of the weight is all ditchable and ditched.
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