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But what would the filling space between the two hulls with water
accomplish? You're inner preasure hull is the only hull that needs to concern
itself with withstanding preasure, you're outer hull is only for
streamlining/asthetics. even then, depending on your speed the streamlining will
be more for avoiding snags than increasing your speed. the water would do
nothing but transfer the preasure to the hull and/or deform the weakest point of
your hull, probably your outer hull. Be like having one gigantic hydrolic jack
rig between the hulls.
Although this gives me an idea... and some of the older hands might slap me
down for this one.
If you have two hulls, the space between the hulls could be over
preasurized... say to 3atm, so your inner and out hull would need to spec out at
3atm to actually dive to 6, because you wouldn't hit a 1:1 ratio until 6atm. The
outer hull would almost be ambient, and the inner would be at a constant 3.
You'd have to have some soft of airlock system to get in and out... or you'd
have to double hatch, and preasurize the hull after you get in... I dunno.
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