220,000 tons?! Am I correct in assuming that's not a typo?!
Do you realize that the largest warships ever constructed, the Nimitz-class aircraft carriers of the U.S. Navy displace "only" 90,000 tons?
Interestingly enough, all U.S. naval ships are constructed to Panamax standards, meaning that all U.S. navy ships will fit through the Panama Canal -- even the Nimitz class.
I don't suppose that these new RCCL ships will be doing Panama Canal cruises.........