It's a foggy day...

Oh, so this is why I was woken up at 4:30 this morning:

Ore Dock in the fog

I have become accustomed to the softly clanging bells and whistles of the Ore Docks; the rain-like whoosssshh that the trains make as they empty their cargo into the giant bins; and the sounds of the engines maneuvering 1,000 foot long ships into harbor.  But I will never get used to the occasional earth-shaking foghorn BWWWAAHHHHHHHHH that the ships sound when the fog rolls in.

I couldn't even see the red navigation beacon at the end of the breakwater...
or the breakwater itself, for that matter. 

But it's probably a good thing that they make that sound on mornings like this.