Wow, so cool! Basically a giant 80 meter long RC ship with an autopilot! :-)
It also has a way smaller battery capacity than I would have expected to be necessary for a (small) cargo ship, even for the short range of 64 nautical miles (~120km). Ships are pretty efficient, apparently. :-D
In the images is looks like the main deck is 4 x 11 containers, I guess any kind of 'canopy' of solar panels above them would need to be easy to remove when it came time to load or unload, but that's a pretty large amount of area (depending on the weather it was sailing in - though I suppose like being becalmed, if your robot ship needed sunshine to sail, it'd just have to wait until the clouds parted...)
Assuming it's more than a publicity stunt, this is the kind of thing we really need to combat climate change. Cargo ships are enormous polluters (and not even just of greenhouse gases)
It also has a way smaller battery capacity than I would have expected to be necessary for a (small) cargo ship, even for the short range of 64 nautical miles (~120km). Ships are pretty efficient, apparently. :-D