That's the one I was talking about, the v1.3. Not good, imo...
Try adding this to your game:
http://patches.ubi.com/silent_hunter_4/
choose the "Silent Hunter 4 1.4.exe" file, download it, copy it into your game's "root" folder. Back off an and all mods, and run the file. You should clear your My Documents / SH4 files also, if the patch doesn't do it for you. You will lose all campaigns and other saves doing this.
It is recommended however, that you purchase the "
Uboats Add-On", and NOT the Steam version, since it only patches their own version of the game.