Moby Dick

Moby Dick is Whitebeard's ship. Its name was revealed in One Piece Yellow Grand Elements.

History
Whitebeard was aboard this when Rockstar attempted to deliver Shanks's letter. Recently Shanks has met up with Whitebeard, revealing that even his massive ship is small compared to Whitebeard's. A few wooden panels were cracked by Shanks' "spirit" when he boarded the vessel.

With Ace's execution drawing near, The Moby Dick has started to sail toward Impel Down by destroying all 23 battleships sent to watch over him. Currently the Moby Dick's location is unknown but it is presumed to be sailing toward Marineford right this instant.

Trivia

 * Moby Dick originally in the anime appeared as though it had a blue whale on the front of the ship. However, later after it was named the anime featured a white whale on the front of the ship.
 * Its name and design is based on the classic tale "Moby Dick"
 * So far, it is the second largest ship seen in the series, the first being Gecko Moria's Thriller Bark.