This 3D model was originally created with Sketchup 7 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 This is a modern airship concept. It it very similar to the Aeroscraft the overall length is Approx. 1440 Ft. long. Thanks to RenderFloat for the propellers