I’d already built the Airship in the Minecraft Structure Planner before building it on the multi-player server just to make sure I made the balloons… well, balloon-shaped.
Unfortunately, MSP was abandoned long, long ago, before a lot of the newer blocks were added (like upside-down slabs/stairs) so I had to import the build into a creative Minecraft map then touch it up somewhat before finally exporting a schematic with MCEdit. The schematic just features the Airship itself. I didn’t include the tower/gantry because a) that bit was done freestyle when I was building on the multi-player server and b) it’s not exactly one-size-fits-all. Anyhoo, I’m sure you can knock together a tower if you need one.