The SS Dierdre was a 23rd century Federation freighter. This starship had, at best, a maximum speed of warp 2. In 2267, the USS Enterprise received a false distress call that supposedly came from the Dierdre, which was under attack by a Klingon ship. The distress call was in fact sent by the Klingons in an attempt to lure the Enterprise away from Capella IV during Captain Kirk's attempt to negotiate for Federation mining rights there.