There is a mod for Battlefleet Gothic Armada 2 that adds new ships. The team is the same, consisting of PistonMiner,Caliger and Imperator with help from Dire Venom and Skalgrim and Jonathan Zotack. Special thanks to Tindalos developer Iluv with helping the Chaos battleship hangars to work. Everything is open to change. Current stats in screenshots are for a ship testing build of my own, since I handle ship assembly.
The Cardinal is an old imperial cruiser of the M36 era that was a weaker precursor to the Neptune/Acheron designs of latter days.
AI uses the new ships as well automatically.