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Hi Joe.
You wrote..."And finally in the event there is a failure of the ballast tanks to blow
or some other failure, a provision to flood the boat and exit one of two hatches
would be made."
If you were stuck on the bottom and the interior of
the boat was dry but you couldn't blow ballast to surface, why flood the
boat just to get out? Then you ruin your interior unnecessarily.
As I was trying to explain to Myles, in an ambient
design there would be no need to flood the boat to exit it if you have a bailout
hole, box or trapdoor.
In a 1 atm design yes you would have to flood the
interior if there was no diver lockout, but not an ambient. In the ambient
design you could construct a trapdoor in the
bottom or even just
an opening with a open box top that you could
either open the trapdoor and jump out or even not have a door at all and just
jump out thru the open box top. The slightly
raised box top would
be just to keep water from splashing in. Remember
your air pressure is going to keep the water out. But you can exit thru your
gopher hole in the bottom, plus your body is already at the same
pressure as the outside water. Like Rick said, wear
a weight belt and do a controlled accent. I suggest you release a buoy from the
sub to the surface also for locating it later.
By doing this you save your interior if it was
still dry and you just couldn't surface. Then you could come back and retreive the boat without the interior being
flooded.
Bill.
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