Hmm... I'm having trouble with this too. I cannot see anything, view distance is maximum.
There is a bug with this mission though (I think) where I have to destroy an enemy barge with big guns on it (battleship). I have sunk it and it still says destroy it. Wants me to destroy the fishes in water I guess.
Can anybody help me? Thanks.
EDIT: Oh and the mission name is "
Desert Stronghold".