Goin' on the Merry

The Goin' on the Merry is Chimpy's ship.

Ship Design and Appearance
The Goin' on the Merry resembles a long strip of poop, with a poo swirl at the front. It has no sail, and only has a flag with Chimpy's Jolly Roger.

Chin Piece
Chimpy used the Goin' on the Merry to land on Kusopp's island, and left on it when he kidnapped Kusopp. The duo, and eventually their entire crew, used the ship to travel to various islands, including Gacha Gacha Island and the Boin Archipelago.

They presumably lost the ship after getting arrested by the Marines, as they're no longer seen with it; however, they still travel to new locations through unknown means.