You'll have a hard time to pass a lot furter as Vecko is releasing very tasty updates once for a while and sometimes you have to restart career
But only sometimes....
Once you'll be ok with some workarounds (for instance not alt-tab from game, or not to destroy friendly vessel), youll be very excited with TWOS, i believe its really best sim of U-boat (and vanilla SH5 is very worst of all time of course).
Enjoy
