CursedPh4nt0m
How about maximum length rails with ammo factories, stacked one corridor apart for the width of the build grid, with a line of reactors on the back? Somewhere in there is a single cockpit and some crew of course, maybe some thrusters too.
"Star Destroyers" with maybe 8 lasers per side, lines and clumps of reactors and engine rooms in the middle of the ship, and only forward thrusters are extremely common.
Ragnarok lookalikes are also a thing, though that's not what they're usually called.