the dynamic of the game? well they are close but not exactly the same. infact, i don't care to play the Atlas mission because the barges don't handle the same as real world barges.
another thng that bugs me is that my wake doesn't effect the other marine traffic. out here if i were to pass by some moored boats doing 30 knots, well, i'd end up sinking the moored boat. in game they aren't effected.