From Valkyrien Skies
An Airship is a collection of blocks, at least a Physics Infuser, which is assembled.
Its blocks will be very far away from spawn, this area is known as the Shipyard or Ship Chunks.
Moving forward and back is done with a Giant Propeller or Legacy Engines.
Turning left and right is done with Rudders and a Ship Helm.
Moving up and down is done with Valkyrium Compressors and a Lift Lever.
Physics settings are controlled by the Physics Infuser.