Maybe there is already something like that, but i don't found it. So, that's a "Mod" made by myself that add the main music from Das Boot movie to the Main menu screen in Silent Hunter 3. Enjoy!
Installation: Just copy the file and paste to SilentHunterIII\data\Sound\Music
File:
https://drive.google.com/file/d/1J2x...ew?usp=sharing
Sorry for any English error, i'm a Brazilian