A four-nacelle Starfleet class of the 2250s whose ships included the USS Yeager, lost at the Binary Stars, and the USS Buran, Gabriel Lorca's former command.
The Cardenas class is among the Starfleet designs created for the first season of Star Trek: Discovery. It is easy to pick out in a fleet because it has four warp nacelles, carried in pairs on either side of a long hull.
The USS Yeager is part of the force that meets the Klingons in Battle at the Binary Stars in 2256. The USS Buran is spoken of several times, beginning with Choose Your Pain: it was Captain Lorca's ship before Discovery, and he says he destroyed it with all hands rather than let the Klingons take the crew. It later emerges that this Lorca had crossed from the mirror universe, where his own ISS Buran was destroyed.