|Mission type||ISS resupply|
|Mission duration||165 days|
|Spacecraft type||Progress-M s/n 418|
|Launch mass||6950 kg|
|Start of mission|
|Launch date||11 February 2013, 14:41:46 UTC|
|Launch site||Baikonur, Site 1/5|
|End of mission|
|Decay date||26 July 2013, 00:42 UTC|
|Perigee altitude||401 km|
|Apogee altitude||417 km|
|Epoch||11 February 2013|
|Docking with ISS|
|Docking date||12 February 2013, 20:35 UTC|
|Undocking date||25 July 2013, 20:43 UTC|
|Time docked||164 days|
|Pressurised||1368 kg (dry cargo)|
Progress M-18M (Russian: Прогресс М-18М), identified by NASA as Progress 50P, is a Progress spacecraft used by Roskosmos to resupply the International Space Station during 2013. Progress M-18M was sent on a four-orbit rendezvous profile that was already demonstrated by the Progress M-16M and Progress M-17M spacecraft in 2012.
Progress M-18M docked with the Pirs at 20:35 UTC less than six hours after the launch. The successful docking climaxed the third successful Same-Day-Rendezvous in the International Space Station history.
Progress M-18M delivered about 346 kilograms (763 lb) of propellant, 50 kilograms (110 lb) of oxygen and air, 420 kilograms (930 lb) of water and about 1,368 kilograms (3,016 lb) of spare parts, science gear and other supplies (dry cargo) to the Space Station.