Here’s a cool site that tracks ocean-going vessels.  Take a look at the map and see just how many ships are out there at once.  And it doesn’t even track all vessels, rather just the ones that are part of the World Meteorological Organization’s Voluntary Observing Ship program as well as yachts that report their daily progress to YOTREPS.

VOS actually provides us with a lot of important information on ocean weather conditions that we use to track storms and swells, which is nice.

Link