The lusankya

The lusankya was a super star destroyer commanded by Isaan Isard during the bacta war. The Lusankya was originally constructed by Fonder Orbital shipyard's Under the name of "Executor" which was actually being constructed at Kuat shipyard's under the same name as to keep secrecy of the second super star destroyer which was later buried and construction was finished under coruscant's surface.

At Isard's suggestion, Palpatine allowed her to construct a terrifying prison complex that would also serve as a brainwashing facility. The Lusankya was actually a functional Super Star Destroyer secretly constructed beneath the towering skylines of Coruscant. In here, prisoners toiled under the illusion of being trapped on some barren rock-world, never aware of the bustling cityscapes surrounding them.