The mechanical Goblin Zeppelin is the only flying transport vehicle in Warcraft III. It is necessary for those commanders who need to move their armies across otherwise impassable oceans and mountains.
Zeppelins are fast units allowing quick travel through bodies of water or reaching spots that ground units cannot normally reach without them, such as high cliffs. Some maps contain areas where a Zeppelin would be required.
If the Zeppelin is destroyed while carrying units, the units will crash-land below or around spot the Zeppelin was destroyed in. The units inside the Zeppelin at its destruction will also suffer from shock and have their attack speed and movement greatly reduced; it cannot be dispelled. If the Zeppelin was destroyed in an area such as over a body of water and the units inside are not amphibious (e.g Mur'guls), then they will die alongside it.