RE: [PSUBS-MAILIST] Diving Catalina Island

[irox <irox@ix.netcom.com>]

Hi,

I'm going to question the "No danger for fast ascending a ambient dry sub"
statement.  I am not a trained diver, btw, so please correct me.  I don't see
how a fast ascent in a dry sub could be not dangerous, won't you be exposed
to the risk of expanding Nitrogen bubbles in your blood stream which could
cause major health problems?

Or is this only a problems a for some other types of diving (and the
stories I've heard are incorrect).

Thanks,

Ian.



-----Original Message-----
>From: Emile van Essen <emile@airesearch.nl>
>Sent: Nov 30, 2007 11:39 AM
>To: personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] Diving Catalina Island
>
>Brian,
>
>That is a unpleasant expierience.
>
>No danger for fast ascending a abient dry sub.
>-the volume is constant
>-it should have a large vent for the air to get out.
>
>More dangerous is descending too fast, you sinking faster than the regulator
>can give air.........
>
>Regards, Emile
>
>-----Oorspronkelijk bericht-----
>Van: owner-personal_submersibles@psubs.org
>[mailto:owner-personal_submersibles@psubs.org] Namens Brian Cox
>Verzonden: vrijdag 30 november 2007 16:49
>Aan: Personal_Submersibles@Psubs. Org
>Onderwerp: [PSUBS-MAILIST] Diving Catalina Island
>
>Hi All,
>         I had a rather unsettling experience out at Catalina Island this
>weekend.  While diving on the back side of the island, looking for lobster,
>we were towards the end of our dive at about 35'  we decided to drop down a
>bit so I raised my air expel hose from my BC to release some air, but since
>this equipment was still somewhat unfamiliar to me I accidentally hit the
>air inject button instead !  Which sent me to the surface.  I had injected
>enough air so that there was no way I could expel the air in time to make me
>go back down.  I think was rising at about the speed of my bubbles and I
>breathed out the whole time going up.   It really made me think, in that
>situation I really had no way of preventing my accent.  If for  some reason
>a valve like that decided to stick on I don't see too many options for
>correcting that situation.  I would think an abient sub would have the same
>issue.  Any thoughts on a solution to a problem like that?
>
>Brian Cox
>
>
>
>
>
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