Gravraft

The Gravraft is a small, circular spaceship utilised by the last survivors of humanity after the end of the Cyber-Wars.

History
In the far future, the ship was salvaged by Yedlarmi and repaired by Ravio. It was utilized by the small group of human survivors that they belonged to in the aftermath of the Cyber-Wars in order to reach the refugee planet, but it was severely damaged upon landing.

When the Thirteenth Doctor and Team TARDIS arrived, the Gravraft was still under repair and at least a day out from being ready for departure from the planet. Shortly after their arrival, Ashad, his two Cyberguards and Cyberdrones attacked, destroying the settlement and forcing the survivors to flee. Graham O'Brien, Yasmin Khan, Ravio, Yedlarmi and Bescot managed to make it aboard the ship but, under heavy attack, were forced to take off without the Doctor, Ryan Sinclair, Feekat and Ethan. Instead, the others stole one of Ashad's Cyberfighters in order to escape.

The crew set course for the Planet of the Boundary, but the damage to the ship and how hard they were forced to push it caused the systems to melt down. Although the crew survived, they were left with little power, limited life support and were adrift in one of the final battlegrounds from the war. Examining the debris field, Graham spotted an intact but dormant Cybercarrier and suggested transferring power from life support to propulsion in order to reach the other ship. With little other choice, Yedlarmi and Ravio used a combination of propulsion and venting the atmosphere to send the Gravraft careening into the Cybercarrier's open hanger bay where their entrance set off automated sensors and turned on some of the ship's systems. The group then abandoned the Gravraft in favour of using the Cybercarrier to reach the Boundary. (TV: Ascension of the Cybermen)

The Gravraft was later destroyed when Yedlarmi, Ravio, Ethan and Ko Sharmus blew up the Cybercarrier in order to stop Ashad's plan to restore the Cyber-Empire. (TV: The Timeless Children)