I first thought there is a problem with the rock in the lower left.
Its not affected by the fog and very clear, which takes away from the atmosphere.
I tried cropping it out and also cropped away the cars, but this costed real estate on the ships.
Then the problem appeared the image became unbalanced and drifted to the open waters at the left.
So I cropped a little there.
In the end I cropped just above the rock, left of the leftmost ship and right of the rightmost (green) boat, leaving some cars visible.
Halfway content but not fully I converted to b/w, raised contrast a little and took care everything stays in the high key area.
Then I brought back the rock a little and finally was mostly content.
To sum it up:
Nice foggy atmosphere with some possibilities to optimize.
Cheers
~Chris