Lictor-class dungeon ship

The Lictor-class dungeon ship, also known as an Imperial dungeon ship or Mandalorian Dungeon Ship, was a versatile warship and mobile prison based on a design used by the Mandalorian Neo-Crusaders during the Mandalorian Wars. The design proved resilient enough that it was still in use nearly four thousand years after its conception.

Characteristics
The models used by the Galactic Empire were equipped with universal energy cages, holding cells, drop bays, and sparring chambers where Dark Side Adepts could battle captive Jedi. They were designed to intimidate, and gained a reputation for never returning a captive who entered them. Guard droids were used to help prevent Jedi escapes.

In order to ensure that prisoners couldn't revolt and commandeer a vessel, their navicomps only were able to hold two sets of coordinates, the home base and the destination, and so could only go to those locations.

Though the Lictor class wasn't manufactured for combat, it did possess 10 quad turbolaser batteries and two tractor beam projectors for self defense.

In addition to the MandalMotors design, there was also the scaled down Kiltirin-class, manufactured by Rendili StarDrive.