From Wikipedia: "A Zeppelin is a type of rigid airship pioneered by the German Count Ferdinand von Zeppelin in the early 20th century. It was based on designs he had outlined in 1874[1] and detailed in 1893.[2] His plans were reviewed by committee in 1894[2] and patented in the United States on 14 March 1899.[3] Given the outstanding success of the Zeppelin design, the term zeppelin in casual use came to refer to all rigid airships."

To make it a little more steampunk, I added some various improbable accessories, like pontoons and fabric rudders.  It weighs in at around a thousand polygons, and was roughly inspired by Glest's airship.