Not bad for a first start, I like the visuals and shapes used!
Notably, the ships are quite under-gunned, especially for their price range. The fact that the frigate support only has PD makes it weaker than even the fighters. All of the ships could utilize a lot more firepower, as well as more specific weapons like electro-bolters to deal with shields. The vessels also have some inefficiencies with their interior design. Now, since most are modded, this isn't a huge deal, but it is something worth noting when creating more ships.
I also second the usage of the Warhammer 40k mod.
Good luck!
