[PSUBS-MAILIST] Damage stability & ballast tanks at an angle

[Alex <spm2@nomad.ignorelist.com>]

I've been thinking about what happens if you have a water tight
bulk head in the middle and the forward or aft compartment floods. Or possibly
with 3 compartments with forward or aft flooded.

Does the submarine go almost vertical? And the most important part of this is
what happens to the external soft ballast tanks. If the tank has a bottom vent
in the middle and it becomes vertical, it will only fill up half way with air
before it bubbles out.

Worst case scenario: Let's say you have a sub with huge ballast tanks on the
bow and stern that can surface even if it is fully flooded inside. Let's say
that the forward ballast tank is damaged and the forward compartment is
flooded. The unflooded aft compartment and stern ballast tank should be enough
to surface. But will the stern ballast tank work with the bow pointed way down?

Alex
-- 
Mailed on 17-Apr-2012.



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