You may be looking for the Minotaur's prison ship.
Prison ship

A Qetesh prison ship. (TV: Goodbye, Sarah Jane Smith)

A prison ship was a vessel used as a prison.

Cessair of Diplos was transported in a prison ship by the Megara. (TV: The Stones of Blood)

A human slave of the Daleks on Skaro referred to having been captured from a space shuttle, with the rest of the crew kept in a prison ship in space. (TV: Destiny of the Daleks)

In the Qetesh society, those who were condemned to exile would be placed in sphere-shaped prison ships, where they would be trapped for eternity with only a game system for company. (TV: Goodbye, Sarah Jane Smith)

The Genesis Ark was a dimensionally transcendental prison ship created by the Time Lords to house millions of captured Daleks during the Last Great Time War. (TV: Doomsday)

The Eleventh Doctor discovered a Minotaur who fed on faith in a prison ship disguised as a 1980s Earth hotel. (TV: The God Complex)

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