CESA over Shared Air Ascent: Which is Best
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captain
Contributor
How many time does it have to be said a safety stop is optional. Even DAN says that not doing a safety stop should not be an issue in an emergency, it is far more inportant to get to the surface alive. Diving was conducted for many years before the safety stop came into common useage.
Is it better to do one, yes but I wouldn't drown myself because of a safety stop.
Then if you don't want to drown AND want to do a safety stop, wouldn't a lovely shared air ascent work wonders?
OP
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Given those parameter, it's not such an issue for me. Given the choice, I believe it is a better decision to share air and that's what the poll is about. Simple as that.
Because the most critical leg of an ascent is the last 30' for recreational dives.
Because introducing ambiguity is a bad idea when considering ascent strategies.
Because blowing off ascent rates or safety stops is not as safe as observing them.
But, please do tell me how a safety stop is possible when executing CESA.
OP
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No more immature than this comment, IMHO.
For the purpose of this thread and this poll, the dive was max depth 25', and you run out at 25'. There is no required safety stop and if you know how to do CESA there is no ascent speed issue.
If we are going to discuss a different situation, perhaps a new thread should be started. I do not vote on any poll but if I had, only I know my feelings that resulted in my non-existent vote.
OP
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No more immature than this comment, IMHO.
For the purpose of this thread and this poll, the dive was max depth 25', and you run out at 25'. There is no required safety stop and if you know how to do CESA there is no ascent speed issue.
If we are going to discuss a different situation, perhaps a new thread should be started. I do not vote on any poll but if I had, only I know my feelings that resulted in my non-existent vote.
If you choose CESA, you choose to eliminate the SS. Tell me how that statement is false.
It is better to do a safety stop than to not do a safety stop.Tell me how that statement is false.
If you choose CESA, you are choosing to blow off your safety stop and unless you are very skilled at CESA, you will likely exceed even 60fpm ascent rate.
That's a bit wordier, but pretty much says the same thing as what you quoted as being immature. I have no idea what maturity has to do with either statement, but they are both accurate.
Now, about that safety stop during CESA.......
captain
Contributor
No, because I am a thinking diver not a sheep. If I don't feel that my dive profile warrents one I will not do one. Example 60 feet for 25 minutes, less than half of the NDL I will not do one. Example 2, 60 feet 52 minutes, 3 minutes from the NDL I will do one. I did stops when near the NDL even before the safety stop was taught. Think!
AbyssalPlains
Contributor
I fail to see why this is even a question? From 25 feet, the distance to the surface is short enough to warrant a safe ascend while sharing air, unless the air donating buddy is totally out of air as well. At the same time, the pressure change between that depth and the surface is the greatest, so the embolism risk is highest during that stretch of the ascent. Why risk an embolism doing a CESA?
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