The world's longest ships

A friend was telling us about the Emma Mærsk (aka Emma Maersk, aka SS Santa, aka USS Wal-Mart, the last being the name she was using for it, quite erroneously, but all in fun). This ship is so big it boggles the mind. At least it boggles my mind. And the normal crew is only 13?

For comparison, I pulled up a List of world's longest ships at Wikipedia. Yinga. Have I done my math right? Emma Mærsk is 210 feet longer than a Nimitz class aircraft carrier?