At work, I typically sit at an east-facing window on the 35th floor of the Sears Willis Tower. Here's my view:
That means I can often see Michigan, Indiana, and everything in between, including very large boats out on the Lake. For the last half-hour I've watched a huge white thing slowly steam South, wondering what it was. It turns out, there's a website for that. And the boat is, in fact, pretty big:
So the 138-meter Glostrander is puttering southward at 19 km/h towards South Chicago. Good to know. (You can see the boat in the photo above just to the left of the Board of Trade building. It's the white horizontal sliver close to the horizon.)