yes, a sub can read zero ! talking to my dad who worked on subs, actually
the gauge can be re-calibrated thus zero can be read. at any point they
wish, when the bottom of the hull is still 20feet below the surface.
Most of you, do not even know, nuclear bombs are also placed in special
torpedoes, of which it would not take more than two to take out Cuba !!!

"James Johnson" wrote in message
...
On 07 Jan 2004 08:04:48 GMT, (Gould 0738) wrote:

Fascinating. What does the depth indicator say when the sub is
surfaced?
Obviously it would not be zero.

That would depend on how far it surfaced. Did it blow all ballast or is
it just barely surfaced?

Steve

If you do an emergency blow from test depth, the forward third of the boat
will
come completely out of the water when the boat reaches the surface. For
those
few seconds I think that would be a 'zero' reading.

JJ


It can't blow enough ballast to put the keel on the surface. My point is
merely
that if the depth is measured between the surface and the keel, (and I
have no
reason to doubt that it is) there could never be a "zero" reading.

James Johnson
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