The Arcos was an Antares-class freighter that was destroyed in orbit around Tasha Yar's home planet Turkana IV. It featured in the episode 'Legacy' when the Enterprise-D attempted to rescue its crew, who were captured by the Alliance faction. The model was adapted from the Batris, and was also used for Okona' ship the Erstwhile and the Ornaran freighter from 'Symbiosis'.