On December 17, 2017 at 13:26 UTC, the private U.S. unmanned supply spacecraft, the "Dragon” SpX-13 (CRS-13 flight), was successfully docked to the International Space Station. The linkup operation was carried out with the help of the giant 17-meter Canadarm. The capture with Canadarm-2 was performed by American astronauts Mark Vande Hei and Joseph Acaba at 10:57 UTC. The Dragon spacecraft was maneuvered into position and attached to a berthing port on the space station's Harmony module. This docking marked the 13th time a Dragon spaceship has reached the space station, counting a demonstration flight in 2012.