On April 19, 2019, the American "Cygnus” CRS-11 (NG-11 “S.S. Roger Chaffee”) private unmanned supply spacecraft was docked to the International Space Station (ISS). The Cygnus spacecraft was grappled by a robotic arm operated by American astronaut Anne McClain inside the space station at 09:28 UTC. The cargo spacecraft was docked to the station’s "Unity” module at 11:31 UTC. The spacecraft delivered about 3800 kilograms of supplies to the Space Station. It was the 11th docking of a "Cygnus” spacecraft with the ISS.