Vickers Transoceanic Airship from Currell’s Card Models. The models are free as downloads.

The Airship page also links to some interesting historical docs on the background of the model. On the free models list page he also offers an H. G. Wells Land Ironclad, the historical R-101 airship (also a mooring mast, and (be still my beating heart) the rocket from the amazing silent Fritz Lang SF flick Der Frau im Mond.