You can publish it separately in something Blender can import. Like FBX, OBJ or 3ds. Blender is free and allow export to all kind of formats. I personally need a 3d balloon model to modify and render into an isometric sprite for my game.
As soon as I find out where I stored the master files for this asset pack, I'll update it and add the airship 3D model to it in FBX and Obj formats for you (as well as the original LWO format). It will be a lot less messy this way and other people might get some use out of it.
Just uploaded the update with the 3D model of the airship included for you.