I have done tons research and have been to places to, and it is 100% realistic to the location. It a form of paint erosion where certain paints act differently to different situations, also the fact its on a port would mean there would a a strong wind and water vapor being in the air so the paint would ware of quicker, the fact the wall is white means that the paint was applied in a rush matter giving more of a back story into the environment.
First, idolon is right. The texturing the way you have it is too noisy and it's too high up foray detailing. You're trying too hard to make the theme work, loosen up with it a bit.
****WARNING, science content****
Secondly, while I do believe you did your research and I do agree it is a weird form of erosion, IF it was salt water in the air and was being blown by the wind, then you'd see the original paint around things that would block wind. That is, it would be more around the windows, but mostly on one side (the one opposite the direction of the wind.)
Conversely, if the wind was in the direction of the face of the wind, then the erosion would be far more even than you have now, with the original paint being heavy I between the windows, because the wind would be stronger along the edges of windows. But when I say window I mean basically anything not generally flush with the wall.
Tldr: what idolon said. And it's too noisey for tf2