Lifeboat

A lifeboat (箱舟) is a device used to travel across worlds and through time. In Kingdom Hearts Union χ, some of the Dandelions use the lifeboats to escape the collapse of Daybreak Town.

Kingdom Hearts Union χ
The lifeboats are first mentioned by Darkness, who tells Maleficent that there is a way for her to escape from the data world and return to her own time. Darkness leads Maleficent to where the seven lifeboats are stored in the Clock Tower of Daybreak Town. Lauriam attempts to stop Maleficent, but is defeated, and one of the lifeboats is destroyed in the process. Maleficent takes one of the lifeboats from the data Daybreak Town to the real Daybreak Town, and then from the real Daybreak Town back to the future, where she appears in Kingdom Hearts II.

Later, Lauriam, Ephemer, Skuld, Brain, Ventus, and Elrena use the remaining lifeboats to escape from the data Daybreak Town. The lifeboats are able to be transferred between the real world and the virtual world, as Brain appears to send two lifeboats from the real world back to the data world for Ephemer and Skuld.

Design
The lifeboats are brown, cylindrical containers large enough to contain a person. They have a single door that hinges open from the top. On the outside, they have metallic decoration and a tinted, heart-shaped window that resembles the Heartless symbol. The interior features a similar metallic decoration that resembles circuitry. Their inner workings appear to contain blue and red wires, as seen from the lifeboat that was destroyed in the clash between Lauriam and Maleficent.