Tags: Artificialsatellite, Satellite.
Progress M-SO1 was a modified Progress spacecraft used to deliver the Pirs module to the International Space Station. It was based on the Progress-M 11F615A55 spacecraft with the pressurised cargo module removed to accommodate Pirs and had the serial number 301.Progress M-SO1 was launched by a Soyuz-U carrier rocket from Site 1/5 at the Baikonur Cosmodrome. Launch occurred at 23:34:55 GMT on 14 September 2001.
