The Tsuranga was a 67th century hospital ship which was invested by a Pting when the Thirteenth Doctor, Yaz, Graham, and Ryan were aboard.
The crew during this time included just Astos and Mabil, while the rest of ship's function was entirely automated, and powered by and anti-matter drive. Patients aboard the ship were Eve Cicero, Durkas Cicero, and Ronan. (TV: The Tsuranga Conundrum)