problems with missions

I dont know if it is my computer or the game. but i downloaded the patch version 1.3 and i am still being sent on the same mission over and over. the mission that they deploy me to Hokkaido Sea to engage and sink ememy merchant shipping. is this happening to anyone else of am i the only one? does anyone know how to fix this? like said i have done this misson going on 5 times and getting tired of it. also my radar still doesn't work anyone know anything about this also?