Federation starships early 24th century still in use by the 2360's. They serve as small deep-space exploration ships and freighters with small crews.

USS Arcos NCC-6237
   Freighter that suffered a warp containment breach near Turkana IV. The crew escaped and their escape pods landed on the planet    where they were captured by the Alliance.
   "Legacy" - TNG.
USS LaSalle NCC-6203
   Reported the presence of a series of radiation anomalies in the Gamma Arigulon System in 2367.
   "Reunion" - TNG.