That's beautiful. I'm impressed we can compute related components on a world map so fast. The interconnections everywhere are beautiful. If this data is reliable, you can go from west europe to east china with just 3 changes (largely helped by canals)

It makes me want to make a remotely (4G) controllable solar-powered tiny boat, and see how far I can drive it, though this map lacks the unreachable discontinuities (dam)