worst ff thing to lose

On 2009-09-29 06:44:56 -0400, Charlie S said:

Reminds me of my one day in "The Tower" in Groton, CT. Those of you
who've watched the show(s) about Navy Sub School know exactly what I'm
talking about.

U.S.S. Triton (SSRN-586) under Capt. Ed Beach, Sept 1960. Liberty in
Bremerhaven, Germany.

Dave, CTTC USN (ret)

In message , rw
writes
You wouldn't have had to worry about the bends (nitrogen narcosis)

The bends are NOT Nitrogen Narcossis.
--
Bill Grey

On 2009-09-28 15:48:03 -0400, rw said:

David LaCourse wrote:
On 2009-09-28 14:31:30 -0400, Bill Grey said:

Yes indeed a simple mistake for the uninitiated but with possible long
lasting consequences. The trick would have been to surface no faster
than your bubbles assuming you were breathing out.


Correct! Years later when I got my NAUI ticket I thought of that day
in Back Lake.

Dave



You wouldn't have had to worry about the bends (nitrogen narcosis) at
that depth. What you should have worried about was the buildup of a
toxic concentration of carbon dioxide in the diving bell.

We had released much of our stored air before we went into the bell.
Took a lung full and back under. The bell wouldn't let us get too much
co2 because after four breaths (two apeace) the water level had risen
(removing the air each breath) to the point were we could hardly get
our lips above the water level. Taking a breath air that is under
pressure at 12 or so feet can be dangerous if you didn't let it out
while surfacing. I know, I know, it is only about 1/3 an atmosphere,
but there is some danger. It certainly was fun!

Dave

On Sep 28, 3:54*pm, David LaCourse wrote:
On 2009-09-28 15:48:03 -0400, rw said:





David LaCourse wrote:
On 2009-09-28 14:31:30 -0400, Bill Grey said:

Yes indeed a simple mistake for the uninitiated but with possible long
lasting consequences. *The trick would have been to surface no faster
than your bubbles assuming you were breathing out.

Correct! *Years later when I got my NAUI ticket I thought of that day
in Back Lake.

Dave

You wouldn't have had to worry about the bends (nitrogen narcosis) at
that depth. What you should have worried about was the buildup of a
toxic concentration of carbon dioxide in the diving bell.

We had released much of our stored air before we went into the bell. *
Took a lung full and back under. *The bell wouldn't let us get too much
co2 because after four breaths (two apeace) the water level had risen
(removing the air each breath) to the point were we could hardly get
our lips above the water level. *Taking a breath air that is under
pressure at 12 or so feet can be dangerous if you didn't let it out
while surfacing. *I know, I know, it is only about 1/3 an atmosphere,
but there is some danger.

8 feet. About a quarter of an atmosphere.

It certainly was fun!

Sounds like it.

g.

On Sep 28, 2:48*pm, rw wrote:
David LaCourse wrote:
On 2009-09-28 14:31:30 -0400, Bill Grey said:

Yes indeed a simple mistake for the uninitiated but with possible long
lasting consequences. *The trick would have been to surface no faster
than your bubbles assuming you were breathing out.

Correct! *Years later when I got my NAUI ticket I thought of that day in
Back Lake.

Dave

You wouldn't have had to worry about the bends (nitrogen narcosis) at
that depth. What you should have worried about was the buildup of a
toxic concentration of carbon dioxide in the diving bell.

Good god, is there no end to self-satisfied fatuous ignorance? Didn't
he say that the water rose in the bell with each dive? Did he say
that it lowered again when they exhaled back into the bell? Carbon
dioxide buildup would require that all or at least some of the air
inhaled from it would have to be expelled back into it, don'tcha
think? And the bends?!?! and nitrogen narcosis?!?! (which, by the way
are not the same thing). Good god, there is no end to self-satisfied
fatuous ignorance!!

WE'RE TALKING ABOUT EIGHT ****IN' FEET OF WATER HERE, PEOPLE!!!!!!

G.

On Sep 28, 1:31*pm, Bill Grey wrote:
In message 200909281331238930-dplacourse@aolcom, David LaCourse
writes



Bruce said that we should blow out all the air as we rose to the
surface. He didn't say why. *It wasn't until years later that I
realized how dangerous this "diving bell" was.

Yes indeed a simple mistake for the uninitiated but with possible long
lasting consequences. *The trick would have been to surface no faster
than your bubbles assuming you were breathing out.

Air embolisms are nasty things.
--
Bill Grey

From a depth of twelve feet (assuming one started out in the prone
position on the lake/stream/sea bed) it would most certainly be unsafe
to rise to the surface at a pace any greater than mach 2. Anything
less than that......um......well, 863 mph still sounds pretty risky to
me, but I've grown somewhat averse to needless risk at my advanced
age. At any rate, no human being, relying simply on his or her own
inherent motive power could possibly surface from that depth at a
dangerous pace. And anything that could accelerate a human being to a
dangerous speed over a distance of twleve feet would kill him or her
with the acceleration.....that's the part that would be dangerous.

g.