Omegan sunskipper
From Tardis Wiki, the free Doctor Who reference
Omegan sunskippers were a type of spacecraft used by Omega and his subordinates during the Gallifreyan invention of time travel. The Eurydice, Omega's ship, was a sunskipper.
Sunskippers were described in chapter 3 of Jane's Book of Gallifreyan Vessels, which the Fifth Doctor remembered when he recognized the Eurydice. (AUDIO: Omega)