A robot ship is a type of automated spacecraft.
During the mid-23rd century the Federation often utilized robot ships for tasked that required minimal monitoring. The Antares-type were often deployed as automated freighters during the 2260s. (TOS: "The Ultimate Computer"; TAS: "More Tribbles, More Troubles")
During the USS Enterprise's encounter with the Kelvans in 2268, it was recommended that a robot ship could be sent to Kelva with the Federation's proposal to allow them to establish a colony. (TOS: "By Any Other Name")
- See: Cargo drone