The SS Carbuncle is a J class free trader common from the 23th century though the 24th. Well maintained examples can still be found.. It is capable of warp speed and planetary landing this ship was a civilian ship for carrying commercial cargo.
Minnow "class" ships receive extensive "in skin" refits that amount to a total rebuild that looks to change nothing. What looks like your typical put-put free trader is really a powerful, fast scout ship with great sensors.
The SS Carbuncle continues to serve in this fashion.