This is a list of unnamed Earth starships of the Ganges-class.
In the year 2153, two ships of this class supported the Intrepid in its defense of the Enterprise NX-01 against a Klingon Bird-of-Prey. (ENT episode & novelization: The Expanse)
In an alternate timeline in 2165, where Earth had been destroyed by the Xindi in 2153, two ships of this class assisted the Intrepid in its defense of the Enterprise against Xindi attackers. (ENT episode: "Twilight")
In the mirror universe, two ships of this class flew in formation with the ISS Enterprise NX-01. (ENT episode: "In a Mirror, Darkly")