In addition to moving itself around the station, the arm can move any object with a grapple fixture. In construction of the station the arm was used to move large segments into place. It can also be used to capture unpiloted ships like the SpaceX Dragon, the "Cygnus" spacecraft, and Japanese H-II Transfer Vehicle (HTV) which are equipped with a standard grapple fixture which the Canadarm2 uses to capture and berth the spacecraft. The arm is also used to unberth and release the spacecraft after use.