Chula warship

Chula Warships were spaceships that could travel in time. Chula Warships were fully equipped with tractor beams and Nanogenes. These warships could also turn invisible, to avoid detection.

Jack Harkness stole a warship, and used it to steer a Chula ambulance to attract the TARDIS, which he thought contained Time Agents. He used its tractor beam to rescue Rose Tyler from falling, and to stop a German bomb from hitting the stranded amublance. This warship was later destroyed by the bomb onboard. (DW: The Empty Child / The Doctor Dances)