Dave, stop trying to change your statements (and stop bottom
posting).
You stated that subs don't use water for ballast.
I posted a few, out of many, sites that state otherwise.



--
Scott Vernon
Plowville Pa _/)__/)_/)_



"Dave Doe" wrote in message
z...
In article ,
says...

"Dave Doe" wrote in message
. nz...
In article ,
says...

"Dave Doe" wrote in message
. nz...

Can you sink a 'positive buoyancy' boat with water? Can
you
sink it with
lead? You've proven my own point.



What do submarines fill their ballast tanks with?

positive bouyancy boat submarine - EVER.


Bzzzt...Oh, I'm sorry, the correct answer is ''WATER'' .

Thanks for playing.

Thanks for your worthless (top posted) posts and links re subs.
They
point out what I have already - that subs sink because their
overall
density is greater than that of the water they are in.

They DO NOT SINK BECAUSE OF WATER!!! - and none of those
articles you
posted suggest they do. They simply describe the bouyancy
mechanism
subs use to go up or down in the water.

Like I also suggested to you - why don't you try thinking of
something
simpler - such as a diver.

Even a simpleton like you should be able to work out that, just
like a
sub, a diver has a bouyancy device - the BCD. However it is of
no use,
no matter how much air you drain from it, or replace with
water - if the
diver is not wearing their weight belt.

Thanks for the laughs though.

--
Duncan