The key component to this mod is the ‘Ship Marker’ block as any blocks attached to it will be considered part of your ship. So bear that in mind when building your ship and try not to attach it to your dock. The neat part of this mod is that the ship can be any size so long as the ship marker block is attached.
You can even turn your structures into balloons so long as 40% of the vehicle contains the added ‘Balloon’ block. With the same ASWD controls as the ship, along with Z and X to ascend or descend, you now have a functional airship any shape and size you desire.