Where's the sail?

The world's largest SuperYacht has been announced. Its pretty massive and really is it a yacht? It looks just like a massive boat.

The old joke is that if you step down and it moves its a boat. If you step up and it doesn't move, its a yacht. While yachts are seen as luxury recreational boats, they can be sail or motor (mostly both). But in some ways you expect a yacht to be able to sail. Superyachts are mammoths of the sea and are privately owned but professionally crewed. Still you'd expect them to be able to sail it every now and again.