[sci.military] Submarine launched missiles

garyb@SSD.CSD.HARRIS.COM (Gary Barton) (06/06/90)

From: garyb@SSD.CSD.HARRIS.COM (Gary Barton)

I was thinking the other day about what a sub would have to go through
to launch a ballistic missile.  Of course, since I have never been on
a sub at all, let alone when a missile is launched, all of what
follows is speculation.  Nevertheless, I have read that when launched
from a submerged position, SLBMs are forcibly ejected from the launch
tubes of the sub with sufficient velocity to reach the surface, where
the rocket is fired.  If this correct (please correct me if this is
not), I thought to myself that the force necessary to eject a large
missile into the surrounding water with sufficient velocity to reach
the surface would be considerable.  Such a large force, and would
result in a pretty good jolt for the sub and its occupants (Newtons
third law).  If the speculation above is correct, this would seem to
preclude the simultaneous launch of multiple missiles (which is probably
not a good idea for other reasons).  However, I would also expect that
there would be some minimum amount of time that must elapse to let the
sub recover from the shock of a preceding launch before a subsequent
missile could be launched.

So, here are some questions for someone in the know: What actually
happens to the sub when a missile is launched?  How fast can a SLBMs
be launched from a submerged submarine?  Is there a price that is paid
in terms of the accuracy of the targetting if the missiles are
launched one after the other?

It would also seem that there would be some maximum speed for a sub to
be moving when is wants to launch a missile.  What would that speed
be?

Given these parameters, it seems that for some period, a sub that
launches a sequence of missiles will be vulnerable to attack because
it will most likely be moving slowly in a steady course with a series
of missiles being launched.  This would seem to give an almost perfect
targetting solution to any potential aggressor.  To what extent can
this period of vulnerability be exploited to destroy the sub or
neutralize subsequent launches?

My assumptions may be way off base, but I hope not.  Please show
enlighten me if they are.  Also, if someone would like to recommend
references that describe SLBM technology and tactics, they would be
very much appreciated.

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| Gary Barton                             | Harris Computer Systems Division |
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