The background ships there are just flipped versions of each other lol. Not a complaint, just an observation.
They look like they're both California classes (like the Cerritos), so maybe it's just a joke or an acknowledgment that there's no "up in space" for the ship on the right to be coming in flipped the opposite way. Perhaps Douglas Station is a way point for Second Contact vessels (California classes and other yet-to-be seen shipe)