meh.....
ok its battleship, we get it. The thing is maybe add more flavour. Graphics are not bad at all, they are good. The screen moving back and forth made me want to stop playing.
Suggestion - take it to the next level, add power ups such as bigger bombs, ship sheilds, ship repair, etc. Of course the field may need to be bigger, but even 1 on 1 can be dull, how about three way matches where you choose who to attack on your turn.
I may be out of line suggesting this but you are on the right track, just take it to the next level.