The USS Canopus (NCC-69237) was a Nebula-class Heavy Exploration Cruiser / Type 2 Explorer that was commissioned into Starfleet service in 2359. Completed as SCB 489.16 variant under contract to Brasilia Heavy Industries Canopus served for 19 years until its destruction by a Mjjrni vessel in 2378. She was the third vessel in Starfleet service named for Alpha Carinae, eventually being succeeded by the Sovereign-class USS Canopus (NCC-77214).