Unfortunately, it has nothing to do with the lines not lining up. I've counted the lines and even held a ruler against the screen to check this.
It is actually registering all sinkings as neutral vessels.
Just prior to this first occuring, I had one of those "Silent Hunter has encountered a problem and needs to close" messages when starting a game from the last save point .... every career started after that has registered all sunk vessels as neutral.
The real surprise was seeing it do the same thing in stock, after re-installing.
I will try one more fresh installation tonight. Pray for me!