Many thanks to all the ones that help me. Wonderfull community indeed!!!
@coronas: muchas gracias por la información.
@Mikhayl: I have embebbed a picture that could help you see the attack periscope protrudding ahead of its case in a Type IIa u-boat.
I fear depth charges could damage further outside its case.
I have installed these Mods in the following order:
NYGM 2.5 Full
1500 meter bearing overlay
Enhanced Nav map plotting tools
NYGM 3.2
IABLShips Rezoned Final
NYGM HiRes Submarines
Hitman Optics NYGM 3.2 (Fixed)
NYGM 3.3
Thanks