The Solanco was a freighter piloted in Federation space by the Cardassian sleeper agent Zonek Karle under the name Jeremy Gleason.
In 2374, the Solanco was destroyed when it went into the Hunyadi Rift after its pilot set it on a course towards the Rift and was then killed by the Jem'Hadar aboard the ship to escort the Founder that was on board. (ST short story: "Night of the Vulture")