That's correct, Fifi. However, I think I found out the answer...
In the EnglishNames.cfg file you can see these 2 entries:
BBRenown=BB Renown class
BCRepulse=BC Renown class
So I think in the SCR and/or RND files only the Repulse class is scripted, and that's the reason why there is never a CTD, because the Renown is not used at all.
However, it would be nice to have both ships available, but I think the reason behind is that they are basically the same...
Renown Displacement=48360
Repulse Displacement=48360
I've also decompressed another copy of V.1.52 and the Renown file is not present in the Roster/British/Sea folder. I am glad to know it's not my mistake...
Also, does anyone know where can I d/l this ship from as a stand-alone mod?