I’ve added a new “spacecraft construction” file that combines some of the rules from Serenity and Battlestar Galactica from which you could craft vessels for established properties like Star Trek or Babylon 5. It’s not set up for a GM or player to get into a lot of crunch — the fuel, cargo, and other aspects that were gone into in the Serenity RPG are stripped out and the weapons systems simplified to make converting other settings to Cortex easy. If you wanted to do a more Traveler-esque game, you might want to use these with the Serenity rules to give yourself a bit more realism.