Could someone please guide me through the Seikan Tunnel mission? I really need some help on that one. I've tried it a couple of times now, but I just can't see that d*mn midget sub! I ping and I drop buoys, but even if I have "show truth" (or whatever it's called) turned on and know where to look, I can't find it on my sonar screen(s). Please help!
EDIT: OK, I'm a little further down the road now

. I managed to find it with the help of show truth (at least I found it...). Now another question: When I have a contact, how do I determine if it's a surfaced or submerged one?