How do I review models in projectwise Navigator made in autodesk Inventor?
Not sure..... have you tried exporting an i-model thru Revit? I think REvit 2012 can import inventor files selectively. There would be some filtering needed or LOD control needed to keep file sizes down.
I think Inventor has a shrinkwarp facility as well.
Mstn also had a JT format import, which is supposed to be a lightweight format for viewing. Not sure if this is being maintained.
Not that I know anything about the JT format, but "JT Interface" v08.11.07.423 was posted on 4/11/2011, so it looks like it is still current.