Galactic transport

Galactic Transports were large ships used by the Autobots to evacuate Cybertron.

Transformers: War For Cybertron Xbox 360/PS3

After learning that the Core's spark was corrupted, Optimus Prime (Prime) ordered the evacuation of Cybertron to all Autobot cities on Cybertron. Several Galactic transports were seen taking off into space, but Trypticon, in his cannon mode, began to destroy the vessels. Optimus ordered Silverbolt to take the gun offline. He then ordered all other transports grounded until the threat was destroyed. After Trypticon was thought defeated, the rest of the Galactic transports safely took off from the planet. Optimus Prime then announced to the remaining Autobots that he had commisioned an Ark for their evacuation and journey through the stars.