Flying Gas Balloon

The Flying Gas Balloon is an airborne ship used by Caesar Crown.

Appearance
The Flying Gas Balloon is a giant ship with a goat figurehead, which is shaped like the horns on Caesar's head, and what seems to be decorative edgings around the sides. There are six cannons installed on the bow of the ship. In levitating the ship, each side has a duct-fan rotor with one extra propeller on top and three extra at the bottom, as well as a giant air balloon shaped like a skull. Tied from the balloon to the duct-fans are two sails with the word "GAS" printed on each one.

Abilities
The Flying Gas Balloon is large enough to carry the giant-sized children high in the air without difficulty.

Ceaser Crown is also one of the few Devil Fruit users who has adapted his powers into an efficient means of traveling the sea, as Ace, Smoker, Enel, Galdino or Kuzan; in Caesar's case, he uses his Gasu Gasu no Mi powers to power up the gas balloon.

Punk Hazard Arc
When Caesar went to retrieve the kidnapped children from Nami and Usopp, he ordered them to return to the ship after Brownbeard attacked. After defeating the three, Caesar and the children are seen sailing away on the ship.

The ship is seen again when Caesar and the children disembark off it at the research facility.