In the Star Trekfictional universe, the Springfield class starship is a type of starship in service with Starfleet in the late 24th century. The planform is made up of a Galaxy-like saucer with two back-set nacelles rising slightly above the plane of the saucer. An underslung Galaxy class secondary hull attaches below the saucer by four inward-curving pylons, two on each side. A second pod, possibly a sensors or weapons pod, attaches to the primary hull and rises in between the warp engines. The Springfield class has only been seen in the USS Chekov, which appeared in the Wolf 359 scenes in "The Best of Both Worlds" (TNG).
The USS Grissom (NCC-638), an Oberth classstarship.
The Oberth class is possibly the most long-lived class in Starfleet, known to be in active service from the early-23rd century through the 2370s, when it was replaced with the new Novaclassstarship.
The Oberth classstarship follows a unique approach to Federation starship design with a primary hull composed of a platform supporting a small saucer at its forefront and two warp nacelles at its sides.