Hello,
I have a problem in ending the mission, i finished it already successfully and i got a message to return to base, so i returned to base and waiting and nothing happened. what shall i do to go to next mission?

ESC -> End Mission -> Dock at homeport.

You also don't need to sail all the way back to port, just as long as you are within 30km. If you see "Return to base", you are not close enough. It has to say "Dock at ..." to get full credit for your patrol.

So good job on your patrol, it sounds as though you used all your fish, I hope they all made impact.

Happy hunting,
Tudds