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Provides enough lift and the wing is an appropriate width for the tanks (will not taco)Why?
Perfect and in which case you end up needing a 60lbs?40 lbs (18kg) is all you need for steel 12 litre doubles. These contain about 5kg of gas weight from full to empty. An ali80 contains about 1kg to minus one kg from full to empty — they float when empty.
So 6kg/14 lbs is all you’re compensating for. The rest is floating on the surface.
If diving in a wetsuit there might be a kg or two difference between shallow and deep.
This is why 40 lbs / 18kg is all you need.
You will use a 60lb wing for tanks that are larger than hp100s--hp120s, lp108s, hp130s, etc.Perfect and in which case you end up needing a 60lbs?
Old school diving with monster tanks and heavy lead-acid lamp batteries.Perfect and in which case you end up needing a 60lbs?