Here I have built two variations on one airship, I'm hoping to improve on them in the future. The first (blue) is the passenger version and the second (red) is the military version. There are pistons inside the engines that are hooked to a redstone clock to mimic engine sounds. They can be turned on by using the lever below deck.

This was my first attempt at building an airship, which was over a year ago. Since it's been so long, I have added a download link. Enjoy! Please give credit if you use them for anything.