Just curious, in some early screenshots of SH4 I saw that the waterline had some kind of softening effect to look like the waterspray on the side of the hull. This took away the look of a waterline as an actual distinct line along the ship.
An example screenshot is this one. It definately made the ship/water interface much more believable and fluid.
I never saw this effect in any of the final releases of SH4.
Which look more like this....
