The 15-kilometer-long Sovereign-class Star Dreadnought, also known as the Sovereign-class Super Star Destroyer and the Sovereign-class Star Destroyer, was one of the largest Imperial warship designs, surpassed only by the Eclipse-class Super Star Destroyer and Executor-class Star Dreadnought. They were refitted between 14 ABY and 22 ABY, just as many of the old Vessels within the Imperial Navy were likewise replaced, this refitting was undertaken by members of the Maw Installation think-tank and led by Bevel Lemelisk.