Aboleth in Space

  Hopefully my PBeM players are not reading this, but I'd like to get some
help in sending the aboleth on Falx into spelljamming.  I was thinking on the
order of one savant and three or so aboleth underlings, lots of skum minions,
slaves of course, maybe an illithid advisor.  All aboard in one of those dual
hull illithid dreadnaughts, or even a more custom design.  I'm assuming that
they bargained with the mind flayers to get SJ tech, but would have to adapt
it appropriately.
  This piggybacks on my "Aquatic Race's Ship" question that didn't get posted
for some reason.  What kind of weapons would it use?  My own idea is no
conventional ones, just shooting large globules of water filled with boarding
parties, but that hasn't been fully thought out yet.  How do they keep the
water in?  Or does the water extend all the way to the edge of the gravity
plane?  Does the water regenerate due to leakage? Etc.  I would like to
assure a certain creepy, dark, Cthulhuesque mystique about it.  I would also
like to use as much "canon" (official TSR writing) as possible but understand
that it will not always work.
  I have Underdark boxed set, the Complete Psionics Handbook, the Aboleth
Savant stats, but not the Skum stats.  Admittedly, I don't play much now,
just design stuff.
  Thank you for your contributions ahead of time.  I'll gather it all up,
sift through it and compose it in a War Captain's Companion format to my
liking and repost if I get enough help.