The warships that provided the Wolfenheim Project’s backbone were all old ships.  Retired decades before The War started, they came from the first generation of gravtech construction.  We found them in museums or drifting in boneyards, and gave them a new lease on life.  The Peloran did the hard work, full refits from stem to stern, and replaced every major system and most of the minor ones.  They gave us some surprising capabilities and we used them.