Executor-class
Star Dreadnaught
Also referred to as Super-class Star Destroyer, Executor-class Star Destroyer, and Executor-class Super Star Destroyer in some sources; heading remains currently technically accurate and up-to-date
Note: When used alone, the term "Super Star Destroyer" is most often used to denote this class.
Newer source material indicates that the ~19,000 meter long Executor-class (according to LFL by Leland Chee and Inside the Worlds of the Star Wars Trilogy) carries over 5,000 turbolasers, ion cannons, and many wings of starfighters. The number of wings is unknown, but Darksaber sets the lower limit at some "thousands" of starfighters. The number of lesser weaponry such as point-defense laser cannon and missile weaponry has not been published. Two prefabricated garrison bases are also stored on board for rapid deployment. Her shields are said to be able to dissipate power output equal to a medium-sized star; in one comic, the shields are shown to protect the Executor from colliding with three Imperial-class Star Destroyers as they left hyperspace at relativistic speed.
Despite its immense firepower, the ship was designed first and foremost as a mobile command and control center. Some sources have suggested that she may be a large
battlecruiser; however, the armor may be enough to be considered a
battleship.
Source