Found Alfa class on youtube - some questions

[Jolierouge]

Some days ago I found a link to download the Alfa class on YouTube (ask Google for "Silent Hunter 4 Alfa class" if you are interested) and now I am playing the US-campaign with it.
Problem is:
the sonar-guys do not Report any contact and sonar itself says unknown even if they are on top of me.
The German campaign works fine. All things do as they are supposed to do, no ctd or bugs or whatever, even sonar works.

The loadingscreen says "Projekt 705/705 K Alfa Class SSN by JSH 2012"

greetings

Jolie


Needed some sleep...

Questions:


Does anyone know this mod?

Maybe the creator is a member?

How can I fix the non-working sonar with S3D?

Is there a readme around or a changelog?

Was it ripped from a mod and the source is not the creator?
As stated on YouTube it Comes with a russian speech pack.

Can Torpedos be moved from german to Us campaign?

If so, how?