The Imperator was able to construct ships up to frigate class, and carry and supply 50 fighters and 25 corvettes, could support resource collecting operations and capture enemy ships salvaged by Porter-class Salvage Corvettes.
During the Homeworld War, only three Imperators were built, and none of them were destroyed. Between 0 AHL and 15 AHL, the Mothership was converted into an orbital shipyard, and used to build over 30 carriers, which became the backbone of the Hiigaran Navy before and during the Beast War.