The form of lift is that the rudder in the back is supposed to be carved minerals from the islands.
Thus the planes can control their height, the sails and propeller is what pushes them forward.
That's why originally the rudder was all fucked up so it looked like it was something carved.
I don't want the player to control any blimp plane, though I planned to make them in the game.
It just wouldn't be a playable airships, a blimp would pop in combat too easily so it's just going to be a technology used by enemies.
Also the way a blimp moves would be more straight, where as now the boat flies like a real plane kind of in game.