Stock SH3 TDC question

[It762]

hello again!

I have a question about the TDC (F6) station. I am trying to manually setup the torpedo and if possible w/o using this "datablock" - just by entering all data in the TDC manually:

1) leftmost dial:
What do the red and green numbers that always add up to 10 mean?
The dial shows at which angle the torp leaves the boat.

2) The second dial from the left is (if i remember correctly) the distance to target.
I do not understand why changing the distance that the torpedo travels has no impact on the angle the TDC predicts? Even if all other dials have been set changing the distance does not change the course of the torpedo what am i doing wrong?

3) the AOB dial shows the AOB the ship should have before shooting or when the torpedo reaches the target?

4) the speed of target dial is clear - showing the speed the target travels.

Can you help?
Thanks!