One BIG Gun with a cockpit on top, some armor, some laser turrets and a small engine.
That is the Devestator. Slow, but the gods have mercy with whatever comes in her line of fire.
Confederations ultimate cap-ship-killer from Wing Commander 5
like all WC-craft scaled 1:500
I don't know, if it is advisable to print the full model, the parts anyway are printable.
Photo will be added soon.