Thanks, but not really what I'm looking for.
A. this thread started with your reference to a old navy diver and he would have definitely known about Capt Bond's sub escape demonstration and I thought would have remarked about it. OW basics even today give a max depth of 60ft. based primarily on the CESA as a out for even a newbie. Most courses (maybe before 94) had a swim requirement of 60ft or so underwater. Any freediver makes trips both ways without air but more later.
B.
First off, even if Capt. Bond's free ascent was unaided, which doesn't seem likely from 1ata at 363 ft. I don't see how it applies to SCUBA since he was starting from a 1ata pressure vessel. 'Course, if the sub flooded, the pressure would have gone up, and his last breath would have been, what? 11ata? My quick search didn't turn up details, but I wasn't interested in spending a lot of time on it.
My error I thought the basics of submarine escapes or lockout was common knowledge. Try
http://www.thevoicenews.com/News/2003/0118/Front_Page/002.html
or Gary D's posted links in his #15 post on this thread.
Before sub free ascents, ie. WW11 etc, submariners used a escape lung (ours was a munson lung, Germany a drager unit)
George Bond demonstrated a escape from a sub (initially 1ATA then equilized to ambient and "released" from a lock and floated and swam to the surface) proving the viability of a freeascent. He had a lung full of ambient pressure air which Boyles law says he either continually exhales as he assends or his lungs imitate the Goodyear Blimp.
Now according to our current guiding agencies beyond 60ft we're into a "soft overhead envoirnment" and a CESA or ESA or whatever you call it is more than a minor violation of decom rules. The
choice depending on circumstances, which can result in any number of effects or none at all and one factor in this choice is experience which I believe is lost today. Back in the 60s it was common to do "free ascents" in your scuba class (no OW, AOW, etc just 1 class) and in mine you did it from 60ft in a quarry, face to face with me, and noone I can remember, had a problem with it and was considered by all a good experience. Today due primarily to liability aspects its a no no and few people have gotten a feel for doing one. I have never "had" to do one, but have done shot dives to over 150ft and either not taken a breath on the way up or just a sip on more than one dive to try it and just enjoyed boyles again with no problem. Also the present freedive records are in some cases riding a sled down and either free swimming to the surface or in the extreme class hanging on to a float and "flying up". Either a lung full of ambient or surface air at the start makes no difference to the actual ascent, other than the obvious .
C.
Third, I don't subscribe to evolutionary theory, but based on it's premises, I don't see how millions of years moving away from the ocean would somehow enable us to return. It seems to me that diving is primarily driven by our curiosity, and actually counter to Darwinian survival of the species. And, it has nothing to do with the topic of the thread
I have no idea where you come from with that but to me its obvious he was refering to the incompressability of the human body (predominately water) except for the natural air spaces. Bond is also considered the father of saturation diving and guiding force of the Sealabs and other deep ocean exploration.
As a matter of fact in the early 60's, freedives to below 5 atas (132ft), were considered self destructive as it was commonly accepted that lung damage occured when they were reduced to below 1/5th (min residual) their capacity. And so we learn
PS that must be the new, new math, cause by the new math and old math that I learned 363/33 equals 11 +1 (ambient)which used to come out to 12ata
I wasn't sure if maybe he had some kind of excape pod; that's what I meant by assisted. Of course I know that he would have to be at ambiant pressure if he was unassisted. But, again, I couldn't picture a method in which be could survive going from 1 ata to 11 ata in a busted sub.
