Dalek stealth ships were used in the Last Great Time War to attack Battle TARDISes. Their main feature was they could not be detected by any Time Lord monitoring systems until it was far too late; the stealth ships would lie in wait in the Time Vortex until the right moment to strike, and when a TARDIS approached they would appear and they would launch an attack.

They had weapons powerful enough to rip a TARDIS open, exposing the interior dimension. A group of stealth ships attacked a flotilla of Battle TARDISes near the Tantalus Eye. (PROSE: Engines of War)

On another occasion, the Doctor fought Dalek stealth ships off the arm of the Emphidian Reach. (COMIC: Selfie)

Community content is available under CC-BY-SA unless otherwise noted.