In Deadlock they ran through a spacial scission and accidentally doubled themselves. Afterwards when they were figuring stuff out, they showed that they knew exactly when and where the doubling occurred and that they understood the math behind the process, that if they had a large enough stock pile of antimatter external to an experiment with the spatial scission that every new Voyager they made from backing over and runnnig through the scission over and over again, they would all be able to be fueled up and be safe once they all bridged over into the same space time.
I think 60 Voyagers would have made an impressive looking fleet that even the Borg would have avoided 60 Kathryn Janeways, since that was a concern on the horizon that kathy was just a touch in denial about.
I think 60 Voyagers would have made an impressive looking fleet that even the Borg would have avoided 60 Kathryn Janeways, since that was a concern on the horizon that kathy was just a touch in denial about.