Star dreadnoughts are the most powerful class of warship. Ships that go beyond this level of power are typically one-of-a-kind or are classified as superweapons. It is very rare to see these outside of the most important and industrialized of the core sectors such as Corellia or Kuat. As a result, most belong to the reigning galactic superpower and will make up the command ships and flagships of its starfleet. In the rare cases ships of this type did appear on the sector level, they were typically referred to by the generic term of super star destroyers. Estimated reactor power for these ships is in the high 10^26 watts - low 10^27 watts range.