To me it looks like the Heinke hood use is marginal at best. The
whole idea of an evac is
just not very appealing. I do not think one should under estimate
the cold water. Being up
here in the far north I can tell you it is a big problem.
I don't think I could put on my wet suit inside my sub, I have a
heck of a time when I have
room. I do however have a survival suit that I have used. I have
spent 5 hrs in the water at
-16 degrees F. The only time I got out was to cool off. This suit,
I think I could get into if I had
too, but am wondering about the buoyancy of it. If I left the hatch
with it on I would for sure
get to the surface in a hurry. With proper exhalation I would think
it would be all right.
Any thoughts
Dean
In a message dated 8/1/2009 4:31:25 P.M. Central Daylight Time,
hc.fulton@gmail.com writes:
I’ve
just studied all that document about Heinke hoods etc and immersion suits and
calculated the time to flood my sub with a 2” valve but had to have a bit of a
think about bubble lines and blowing etc. A bit depressing.
Thought I might start designing an aeroplane instead. One thing though
Frank, I think we need to be friendly to all those ROV operators who could
guide an anchor within grabbing reach!! The other thing which is
interesting is that they appear to only flood the compartment to about 80% (
Bubble line ) then appear to equalize with Air pressure or is that
wrong. They have a Blow term and a vent valve for equalization of the
last part. How about something from one of you chaps who have actually
done the escape! Chs, Hugh
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of
ShellyDalg@aol.com
Sent: 02 August 2009 03:39
To:
personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] escape
from sub
Would
it be practical to wear a wet suit ( or dry suit) when escaping from our
psubs? They are hard to put on, but would help keep you warm, and add buoyancy
when at the surface. Why don't they use scuba tanks for escape? The article
mentioned escape from 900 fsw.....OUCH!
Better
to stay put and have the means to grab a hook dropped by a rescue boat. I was
thinking a manipulator arm could grab a hook and attach it to the sub, so you
and the sub could be hauled up. How the hook arrived below, within reach of
the arm would need to be figured out, but escaping a downed sub doesn't sound
very good. Frank D.
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