depth keeping as solo and diveplanes up or down?

[Pisces]

I'm just reading this document and it says the fore and aft diving planes angle ranges in the game are back-to-front also:

http://www.uboatarchive.net/Manual/Manual.htm

Dive planes installation.
The forward and aft dive planes are mounted on common shafts. The maximum deflection of the forward planes is 30° up and 30° down, for the aft planes 25° up and 35° down. The spindle driven by an electric motor moves the pushing rod either in or out and through the connection with the rudder shaft lever deflects the dive planes. The aft dive planes each have an area of 2.25 m², each of the the forward dive planes area is 2.4 m².