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Dave Doe
 
Posts: n/a
Default Any thoughts onhow to make this boat better

In article ,
says...
You stated that subs don't use water for ballast.
I posted a few, out of many, sites that state otherwise.



Dave Doe wrote:
a.
Indeed they do not. They probably use Lead or DU.


Really? Is there a special place in the ocean where
submarines can just scoop up some lead or DU when they want
to dive?


You're just being a pedant aren't you.

What makes a diver sink? - the BCD? Or the weight belt?

The lead or DU is put in the sub at manufacture time, to ensure it is
"heavier than water" (it's overall desnity is greater than water).

Otherwise.. yes they *would* have to find a special place to scoop up
lead, DU, rocks - whatever - to submerge - as their bouyancy ballast
tanks would be ineffective with water in them. You'd have a positive
bouyancy vessel. You can put as much water in 'em as you like - it'd
never sink.

Ostentatious reply expected...

--
Duncan