smog? or lotsa clouds desaturated? i'm really trying to keep from saying doesn't meet the challenge, but it's hard. i mean, without the title, it would be an image of a sailboat on a cloudy day...
I think smog shows up better in color - it is so obviously yellow and brown rather than fog which is white or gray. This looks more like clouds to me. Another technical point on this photo - your water line is not level.
it was a terrible film, but this strongly reminds me of independence day (big spaceships etc). in terms of the quality of the shot, this is fantastic. the sky - obviously the focus of the shot, is both dramatic and beautiful. the little boat is a nice touch, that definitely adds to the overall feel. choice of black and white (well, greys and white, really) is also very nice. problem with the 21st century is that, unlike the wonderful days of where the burning coal and oil in the middle of cities was rife, the burning of clean fuels, even diesel, produces a very clear kind of smog. consequently, title aside, it's hard to see why this fits this particular challenge. it's still a wonderful shot, very poster-esque. can't give you more than a 7 though. sorry.