OP
holdingmybreath
Contributor
but then folks like freediver who have been to 185' could make a free ascent from 270'? there would have to be a limit to the assumption of doubling your freediving depths for solo diving I would think.. but I sure don't know much about scuba ya know...Rick Inman:I think the logic is (and I'm not saying I agree) if you can free-dive down to 30 feet, thats 30' up and 30' down which equals 60'. So if you are on scuba at 60' feet and run out of air, you know you can easily make a free ascent.