SpaceX Booster Recovery Program
SpaceX operates a fleet of ocean-going autonomous spaceport droneships (ASDS) for Falcon 9 missions that are not capable of landing back at the launch site (RTLS). Falcon 9 missions may require a droneship landing instead of RTLS due to the weight of the payload or the overall mission profile. SpaceX currently operates three droneships in operation – an original experiment droneship was retired in 2015.
Just Read the Instructions (OG)
Original experimental droneship with the same name as one of the current active ASDS's. Retired in 2015 after a number of (failed) test landings.