After building an actual battleship that could reach the planet's orbit and stay there, redditor avaslash created an improved version, taking it on a tour across the Kerbal solar system -- getting as far as Jool, Kerbal Space Program's Jupiter.
Of course, again, the biggest obstacle was getting the new cruiser to fly. Complicating matters was a new fuel system which caused several malfunctions across the board. Nevertheless, the UKN Kaihōpara managed to reach orbit, and from then on, it was smooth sailing. Kinda.
Here's the full story with a lot more screenshots.