Hello Captain Morgan,
I think no : playing with GWX contact sunked an hospital ship - marked red as ennemy - in patrol 4 in October 1939: nothing happens to me (not a single remark from BDU).
It happened to me too to be dead after a very succesful patrol with start at sea when coming back to Wilhelmhaven and choosing to finish patrol with return to basis within 20 km ? I started patrol again.
Since I try not to forget to make some saves when at sea.
In patrol 10 in beginning June 1940 each time i tried to catch small convoys in the Channel BF32-33 from France to Southhampton I got CTD (tried almost 10 times in different ways) after that I chose to go far away and navigate towards the Atlantic ?
I put this on the account of "strange PC behaviour" for I have untill now no explication.
Greetings