I am thinking that it would be possible to
turn a K250 or any sub
into a semi-ambient for an emergency situation
where you needed
to go to 400ft.
Example --- Go down to your 250 ft limit & turn
on an ambient system
at that point, this pressurizes the cabin as
you progressively descend.
Theoretically you could go another 150ft, down to
400ft.
I guess you'd need a lot of tanks for a K250. Maybe
more practical for
Cliffs sub wich is a bit smaller. You would need a
dive computer for
decompression calculations, an over pressure valve,
a modification of
the life support system wich could be as little as
increasing the O2
flow into the cabin. Also the instrumentation would
need to take 75psi.
The ambient equalization system could be set up by
having a outside
pressure reading & an electronic system that
fed air into the hull when
the outside pressure was more than 125psi above the
inside.
Just thinking.
Alan
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