Here is a ship I designed for my Eberron campaign...
Instead of sails, airships have a fire elemental bound to it. A ring of fire surrounds the ship and the pilot "controls" the elemental in order to maneuver the ship.
I designed this ship with the expectation that my players would eventually take control of it. So I deliberately included elements that would be helpful and others less desirable. That said, I expected the players would modify it at some point.
|Image taken off interwebs without permission.|