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US Crew Vehicle-4
SpaceX Crew Dragon and Boeing CST-100 Starliner.jpg
Mission typeCrewed mission to ISS
Mission duration6 Months
Start of mission
Launch dateNET 2021/2022
Orbital parameters
← USCV-3
USCV-5 →

USCV-4 (US Crew Vehicle-4) will be the fourth operational crewed flight of a US commercial spacecraft onboard either a SpaceX Dragon 2 or a Boeing CST-100 Starliner. The mission will resupply four astronauts and cargo to the International Space Station[1][2][3] The mission will last and be docked to the ISS for 6 months.[4][3] Little is known about this mission due to it being scheduled to launch six months after USCV-3 which itself is scheduled to launch sometime in 2021.[1]