Re: [PSUBS-MAILIST] Ambient vs. 1 ATM: the historical perspective

[VBra676539@aol.com]

In a message dated 2/27/00 5:34:14 AM, Allan_Gaines@yahoo.com writes:

<< 

>My four seperate ballast tanks also provide safety via system redundancy;




    Speaking of ballast tanks, I've got a question.  I take

it you have to get INTO ballast tanks occasionally to

clean them out (either "crud" or corrosion).  How do

you do this?


    This question goes for anyone on the list who has

a sub.

 >>

You don't spend much time cleaning tanks. If the sub lived in the water, it 
would need more attention, but a little attention with a squirt nozzle 
usually does all that needs doing. If it is an integral tank, like the 
Nekton's or the early Perry boats, they had to have access for hull 
maintenance. The Nektons have secondary ports to remove and the Perrys have 
inspection ports w/O-ring seals. Most MBTs are either fiberglas or stainless 
steel, specifically to reduce the impact of rust/corrosion. As for mud and 
crud gathered when diving lakes and rivers, I'd recommend you hose everything 
down as part of your post dive. That's standard offshore.
Vance