And one more thing...You're keep chasing 70.000 tons near EBCW even though your tonnage is not registered anyway. If you could see your tonnage bar it would show you
0 no matter how much shipping have you sunk near EBCW line. This is game bug which is completely bypassed with my NoTonnage bur/free style campaign mod and/or TWoS patch5hotfix2 so forget the old way because new patrol areas will become available with their historical dates, not by filling imaginary tonnage bars...
P.S.
Because you've sunk so many ships I would really like to see your
CareerTrack.upc from your last gamesave. This could help me a lot in my research regarding sinking of neutral shipping...