Quote:
| Originally Posted by NotDeadYet
Absolutely. It's a good starting point when thinking about a plan but once you're in detail then it is usually useless. Even in cave diving I find it a bit liberal.
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Bollox... it's a lot better than sticking your finger in the air.
Maybe in cave diving as there's a lot that can go wrong to impede your exit, but in open water you can plan an ascent and gas supply quite easily.
You should know better...