I don't get it. Is this supposed to actually roam the oceans or is it going to just stay in one spot? It's going to take a shit load of energy to move that thing and I can't imagine the amount of waste it'll produce. Now if it's some resort a few miles from the coast (anchored to the ocean floor like oil refineries, etc.), that'd be kind of cool.
Oh and if it actually travels the Earth, it's going to tip over and that's going to look damn cool.