[pascal72]

Yes, as said DM (thanks for his help), this is an addon for the addon.. .. here is the link :
The scope is also animated and I added too a flag (of course only visible in surface mode), here are some screens of both exterior and interior :

first in surface mode when the animation is on with CTRL-A




then in immersion mode, with the animation off (by default)




Download U-Boat Crew;
U_Boat_Crew

Don't forget to read the documentation : Enjoy the new crew and "Torpedo Los..!"

cheers