Re: [PSUBS-MAILIST] escape question

[Ray Keefer <Ray.Keefer@Sun.COM>]

Hi Bruno,

Yes, it is possible. 

The problem I see is if the sub is stuck in a net at 300 feet. The bottom could
be 600 feet. As you flood the sub it could become heavier then the net floats
can support. By the time you flood out and egress the sub could be down to
400 feet or 500 feet. 

At some point you might was to consider getting out alive reward enough and
cut your losses by letting the hull go to the bottom.

As others have mentioned you will need to breath mix gases to work at
300 feet for any length of time.

As a design feature you could design your sub to be flooded. Either you
have a diving lockout chamber or you flood the interior you are in.
In either case your sub will have to be designed to:

1. Blow clear a flooded volume equal to what you want to flood. That is to
keep your sub a neutral bouyancy.

2. Protect interior electrics and electronics from sea water. I doubt a 
typical fuse panel would take well to sea water. Your design will have to
some how keep the two seperate.

If you let your hull go and you decide to come back and get it, 
your sub it will be on the bottom with its hatch
open. Some how you will have to get down to the sub, close the hatch, attach
an air hose, and blow your sub dry. The net you got stuck on will still be
there. Possibly entangling your recue sub. 

In any case rescue of anything deeper scuba depth, say 160 feet. Starts
to become problematic. What happens if the bottom is 3,000 feet? 

Some members here in PSUBS recommend never operating in water deeper then
you can practically recover your sub in. Others recommend to never dive in
water deeper then your crush depth. With your surface support ship calling
for help and your 72 hours of life support you have three days to be
rescued.

Regards,
Ray

> bruno masse wrote:
> 
> this is my question (maybe stupip!)
> 
> ok imagine im stock in a fishing net at 300' feets and noting to do to get out of this shit
> is it posible to put my diving gears on ,fload the sub get out cut the fishing net
> come back in the sub pump the waters out and come back to surface with out any problems?