A Starfleet class of the 2250s closely resembling the Constitution class, represented by the USS Peregrine, whose crew was wiped out by Gorn hatchlings on Valeo Beta V.
The Sombra class looks much like the Constitution class, with a round saucer, cylindrical engineering hull and two nacelles, but differs in its details and proportions.
The USS Peregrine appears in the Strange New Worlds episode All Those Who Wander. In 2259 the ship is found crash-landed on the icy planet Valeo Beta V, and an Enterprise landing party led by Pike goes to look for survivors. They learn that the Peregrine had taken aboard refugees carrying Gorn eggs; the hatchlings killed almost everyone. The young Gorn hunt the landing party through the wreck, and chief engineer Hemmer, infected, sacrifices himself. The crew later salvage what they can from the hulk.