The Extempus, a Delta-class carrier, functioned as the flagship for Moff Nezzor within the Imperial Navy. This vessel saw action during the Galactic War fought between the Sith Empire and the Galactic Republic. In 3640 BBY, the Extempus took part in an attack targeting the agriworld of Ruan; however, it met its end during a later attack on Duro, where Nezzor was ambushed, resulting in the ship's destruction.
As a Delta-class carrier, Moff Nezzor's Extempus could deploy a squadron of two dozen Fury-class Imperial interceptors. Furthermore, it was outfitted with a Black cipher encryption module. This suggests that the ship would have been considered among the largest capital ships serving the Imperial Navy.