^^ I already solved it. There is no need to go to a base and talk to commander to get a mission, once march 1st occur, i can go straight to the mission area and do my thing, and thats what i did
On march 1st went straight to the weserubung, found 4 regural ships, and queen elizabeth, it was pretty easy. Now i am on a Happy Times. Went to patrol 100 000 tons mission, and guess what, large convay, with 12 ships. In the middle of convoy four 16000 toners, surrounded by bunch of 7000 toners, and of course, no warships
You want to hear the best part? At a same time, about 40km away, another large convoy with no warships lmao
Probably gonna go for those four with one torpedo each, then use deck gun, probably gonna take a lot of time, but of well
Then gonna head for another convoy