Russian manned spacecraft module. One launch, 1987.03.31 (Kvant 1). Used only once, tug docked Kvant module to station, then separated and was commanded to destructive reentry over Pacific Ocean. Space station module tug.
AKA: Service Module;TKS. Status: Operational 1987. Gross mass: 7,900 kg (17,400 lb). Unfuelled mass: 2,900 kg (6,300 lb). Height: 7.20 m (23.60 ft). Diameter: 4.15 m (13.61 ft).