Kroton ship

Kroton ships were a type of ship used by the Krotons. They could hold over a thousand Krotons, had more sophisticated teaching machines, and were considered more advanced than the "inferior" Dynatrope (AUDIO: Return of the Krotons) which required four high brains to pilot. (TV: The Krotons)

The Sixth Doctor encountered a Kroton ship on Onyakis three millennia after it had crashed on the planet. (AUDIO: Return of the Krotons)