A multipurpose transport ship developed by Celestial Being as a mothership for the Gundams. One Gundam can be stored in each of its four containers, and these Gundams can be launched successively from the catapult in the bow of the ship. The Ptolemaios was designed exclusively to support the Gundams and it has no weapons of its own. Even its engines run on the GN particles supplied by the Gundams themselves, and the ship must be periodically recharged by a Gundam's GN Drive. The ship is also known by the nickname "Ptolemy."