BattleCruiserCommander It uses mods, so I can't really tell you. But it does seem rather slow, and you could have used the space that was taken up by the excessive control rooms for some more internal thrusters. Or turned a lot of the armor in between them into structure.
Dos, and Don'ts For BUILDING! (out of date)
Oneye isn't one of your tips to have multiple control rooms?
CursedPh4nt0m This guide totally works for smaller ships, but I kinda HAVE to clump reaktors to power some max-sized battleship´s weapons and shields.
Everyone else doesn't. Not more than a couple where shielding around corners, maybe three for an acute corner.
BattleCruiserCommander isn't one of your tips to have multiple control rooms?
The purpose of multiple control rooms is so that you can't be shut down by concentrated fire. A square of four control rooms isn't helping at all over what one control room provides, and you're going overboard even if they were singles. Unless your ship is designed to break into independent ships you probably don't need more than three control rooms and two is usually enough.
Atarlost the ship is designed to handle a bunch of tiny ships, and maybe 1 to 2 biggies.
Besides, I think if a cannon shot shoots one of them, I can relax knowing the ship controls are fine.
Are there any "Do's and Dont's" on this ship?
Judge-Class Star Destroyer
BattleCruiserCommander Multiple control rooms Yes, but still 12 is bit to much for this ship size, instead of that you can have 3-4 but better protected for same money, and still some additional weapons/shields/thrusters.
Sensors have no additional effect if stacked so 1 is enough, they drain a bunch of energy, and lot of crew, for just little bit longer line of sight now, and no change to that soon. And placing reactors at 4 together is no perfect as well, expect you are fan of huge explosions 
the_guy545 I can not help you with that because it is almost completely modded. Sorry.
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Oneye Oh. Ok. It's fine.
the_guy545 I can only think of one "Do": Build and use ships your computer can actually handle. It once took me several hours (don´t remember exactly, but it was quite some time) to build a ship that just made my game crash. That absolutely wasn`t worth it. My computer is pretty bad (guess u could use the term "total garbage") and I instantly knew your ship would rather kill my game than my ships.... Got no useful tips regarding this one for that reason.
PS: Sry, can`t stop writing!
Oneye
Do's: -move your shields outwards to prevent rockets from exploding near your ships hull. (This DOESN'T replace point defense!)
-build and use ships your computer can actually handle.
-check the explosion range of reactors (and other explosive parts) while building a ship in creative mode. ("Self destruct" has proven quite useful in that regard.)
Don'ts: -use too many shields at a single spot.
-rely solely on shields. Taking them down is way easier than you may expect.
(-be an asshole. This one should be self-explanatory.)
CursedPh4nt0m My computer is a lot better than yours apparently, as my computer can handle about 5-8 of these, and perhaps 10-15 of these if I go to 1/20th speed using the Tweakscale mod.
the_guy545 So that's how the mod is called. Was wondering all the time how you could possibly use 1/20th speed... Thx
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CursedPh4nt0m there are a few mods that change the time speed, for example speedset mod
25 days later
Don't forget to put at least one weapon or you will get killed without a fight
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Catelyn
Good design for combat ships is always fully oriented on performance, every credit spend on decoration will make difference between death crew and living crew
Ask yourself, will you serve on very good looking ship, in case that it is obvious suicide?
EDIT: that ugly hole inside ships are from my point of view strange and i do not like them too.