Mark, if you and I are really talking about superyachts, not the "superyacht" they showed in the video, I think we're a loooooooong time from anything happening on that size boat. I can't imagine how much power it would take to lift a true superyacht out of the water. I just spent a few minutes looking around the internet to try to find out the weight of a 200' superyacht. The listings I looked at showed just about every spec except displacement.
But as soon as I make a statement like the one above some sheik in Dubai will get a wild hair up his camel's [censored] and he'll have one built. He'll need half the money in Dubai to built it and the other half to operate it..