The USS Strata was a 24th century Federation starship operated by Starfleet. This geo-terraforming ship was under the command of Captain Jason Stone. Doctor Martin Rackham was the starship's Chief Medical Officer. The Strata was the first assignment of the then Ensign Chu'lak in 2355. This ship was named in his personnel file. (DS9: "Field of Fire")
The name is perhaps an in-joke reference to the Terry Pratchett novel of the same name, which was also concerned with geo-terraforming (of a sort).