I'm afraid you have found a tutorial that is worthless for SH2
It looks that SH2 has the correct german TDC of WW2, while SH3 has a wrong one, partly copied from US subs -which used position keeper and AOB to determine the solution-, so if you use the methods of SH3 tutorials, you will not be able to fix a proper solution.
Ironically, SH3 did wrong the only thing that SH2 had really done well :P