well the game is unbalanced and we know already but even in nf the bbs had hh to defend against subs.... but since u cant setup your weaponry in this game there is no way to defend against subs,,, and even worse, even if u waste enought time to let em run out of air they can park next to you and u will not be able to hit em at all... cause the spread gun system is terrible,, in this game the bulge is not any close to nf1 ,,, , and the bbs are totally helpless against subs even when they are surfaced its imposible to hit em if they are close to the ship.