Fleet chief engineer

Within Starfleet, it is a role given to an Engineer responsible for the engine rooms of a fleet of ships. Unlike the Chief engineer, the Fleet chief reports directly to the Fleet Commander and is not solely responsible for Engineering on one vessel. Quite often they will operate out of one engine room and communicate with the Chief Engineer of the other ships, who in some cases report directly to the Fleet chief engineer.

In Project Full Circle, Lieutenant commander B'Elanna Torres became the Fleet chief of the USS Voyager, USS Esquiline, USS Quirinal, USS Hawking (NCC-81897), USS Curie (NCC-81890), USS Planck (NCC-81894), USS Galen (NX-86350), USS Achilles (NCC-77024), USS Demeter (NCC-79914). (Full Circle (novel))

Later the USS Vesta joined the fleet after the destruction of the Esquiline, Quirinal, Hawking, Curie and the Planck. Thus Vesta's engine room became Torres' responsibility. (Protectors)