How deep on air?
I found this paper online and thought I should post a link. It's a great read especially if you're thinking of going deep on air:
http://www.oseh.umich.edu/diving%20articles/abolish.pdf
So what's your personal dept limit on air? I just did my deepest dive on air a few days ago down to 141 FSW and felt comfortable and kept well within my no-deco limits on my computer.
190 max depth on air because of Partial Pressure! Time is the major factor, what can you do on a no deco profile below 130ft? Add narcoses and what can most people do at that depth anyway? A single picture and salvage job, hooking a line, maybe? Most people become very non-functional below 160ft. Simple tasks become impossible! So unless you have very good reason to go deep, don't!
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I fully agree, 99% of my dives are in the 60-80ft range or less, and I knew AAUS air limt was 190 but most other orginizations are 130. I was more after personal comfort levels and the only reason I went deep was to follow the shelf down the rocky reef which was our plan. I ended up with a 40 min dive but only 8 mins was under 100 ft.Originally Posted by Papa Bear
So unless you have very good reason to go deep, don't!
Done about 150, Blue Hole, Belize. Felt fine, no obvious narcosis, but then again I wasn't actually trying to do anything.
I know some folks who've done a lot deeper, but usually for a specific reason. Some friends did Chuuk last year and they certainly hit 170+ on air, not sure for how long or what the deco situation was.
I'm with you Papa, unless there's a good reason, I'll stay much shallower. Anyway, I'd rather spend an hour on a reef at relatively shallow depths than go deep and only have 5 minutes down there. Also, aside from NDL restrictions, the deeper you go the quicker you use the gas in your tank, whatever it is.
Take only pictures, leave only bubbles!
I did the blue hole in Belize too! Very nice. I was at 140+ on air which was deep enough to get to the huge stalactites. Besides there wasn't a lot past there to see. We stayed down 8 minutes I think. I have been to max 170 on air on another dive but for just a very short time..a minute or so. There wasn't much to see there anyway. Unless you're going to get a look at a shark or something else down there of interest it aint really worth going down there. Less to see and you shorten your dive time and your dive com will nag you a lot on the next dives if you don't have one made for deco diving.
Here is video in the Blue Hole to 171ft! Even running a smooth camera at that depth is hard! http://twotankedproductions.com/trav...ressoriii.html
May all your dreams be wet ones!
Reed's Rod dive Tool Please help save the worlds Coral reefs! http://safemooringfoundation.org/
On a closed circuit rebreather with air as the diluent 165 feet which is the deepest I have been is the equivalent to being on air as far as nitrogen loading.
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I did my deepest dive to date in the Blue Hole ( Dahab) in 1998 I reached 56 meters but to be honest I did not enjoy it at all I was to concerned with the increased risk factor of deep diving to have a good time, I vary really go deeper than 25 meters these days unless there is really something I want to photograph.
“just living my life in the eternal summer “
Let's face it, trimix only last 8 9 / year has been most popular and availability is still a problem. Diving words, got gas diving is still very much in my childhood and indeed increasing popularity.At at least I'm on a mix in and feel comfortable and aware of their actions.
Last edited by simesdwin; 01-05-2011 at 06:12 AM.
Your childhood? What are you talking about? Your posts make no sense.
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