Origins not correct.
Model is separated into objects.
OBJ file comes with a MTL file.
Materials are shades of gray.
Blend file comes with lighting setup seen in preview images.
Blend file still has some of its modifiers, select all of the objects, press alt+c then click 'Mesh from Curve/Meta/Surf/Text' to apply them instantly.
Tubes are already converted to mesh so they will be difficult to modify if you plan on doing so.
In the Blend file all spaceship parts are parented to the mainhull object.
Has edge split applied in OBJ file so it does contain vertices that occupy the same area, this is to add sharp edges to an otherwise smooth surface.
Flaps don't move.
Blender file comes with camera and 2 lights.