The USS Arcos (NCC-6237) was a Deneva-class Federation starship in service in the 24th century.
In 2367, the Arcos was destroyed by a warp core breach over Turkana IV. The ship's two-man crew survived in an escape pod, but landed on the war-torn planet where they were captured by the "Alliance" faction. They were later rescued by an away team from the USS Enterprise-D. (TNG: "Legacy")
- The Arcos was seen very briefly before it exploded in "Legacy," but the model used to represent the ship was not identifiable. It may have been the Merchantman model from Star Trek III.