King of Beast

"King of Beast": was a huge error name for the Straw Hat Pirate's new ship Thousand Sunny

But as human, everyone makes mistake, no one is perfect.

History
In chapter 436, before getting Franky to join the crew, the Straw Hat Pirates decided to visit thier new ship. Iceburg made a comment that Franky thinks the Pirate King should ride a "beastly" ship. Many fans thinks that the ship was to be called "King of the Beast" and became a common fan name.

But prehaps we forgot that Oda is unpredicateble, in chapter 439, there was a scene after Franky joined and before Garp attacked, where the Straw Hat Pirate decided to pick a name for the new ship and was called by the offical name: Thousand Sunny.