Thank you for your help Targor.
I'll look into it. I am going to start a new career and see how things go...
The SubFlag mod is not compatible with some of the mods I have installed so... no sub flag on my Uboat!
I still have to check for those round dials but I think the "C" key is for crashdive...
I'll stay away from that CTD simply by not talking to that crew member. Easy!
Thanks again.