Apparently, you can monitor most marine traffic on MarineTraffic.com. A friend who just returned from a 21-day cruise of the Panama Canal told me about this. You need to register, but the Basic account doesn't cost anything.
So, you will be able to follow us as on the cruise! Our ship is called Le Boreal. We and the rest of the tour board it at Ushuaia, in Tierra del Fuego. I'll remind you to add her to your map just before we leave.