Hi Rosomaha,
Unfortunately, I couldn't add new version of you C3 ship even though I like it even more than the first version. From some reason, with new files, CTDs in my museum rendering tests are present even with all files re-saved in goblin. This means that the problem is somewhere in other TWoS (probably imported) units. These conflicts are very hard to isolate so for now I have to stay with old files.
Regarding old C3 files...These are completely irrelevant and ignored by the game since now new file path is stated in C3.cfg file, which is "3DModelFileName=data/Sea/NKC3/
NKC3_ClassShips".