That's interesting. Currently, Celebrity's Millennium Class ships & Royal's Radiance Class ships just fit in the Panama Canal, anything wider wouldn't fit. I wonder what the planned itineraries for these ships would be? Unless they are planning to take them around Cape Horn, or the Straights of Magellan any particular ship would be limited to an itinerary either east or west of the Americas.
Queen Mary 2, Canada
Enchantment, Western Carribbean
Century, Western Mediterranean
Jewel, Eastern Caribbean