try this one..... 590’ long!! geezz, almost 2 football fields long:
http://www.boatinternational.com/yachts/the-superyacht-directory/azzam—57571
One would get lost onboard....
I’m sure it’s never available for charter, though.... UAE royalty
That’s more like your own personal cruise chip. When they get that big, I think you either might not know what to do because there’s too much going on. If or when I have the wealth to do this (at least once), I’d go for a smaller yacht.