Hello matur61,
You could probably create a curve set in MoI and import that into Rhino and use TSplines to build this out, or just import the image reference into Rhino although I find the image options in MoI a little more friendly. If you want that model as NURBs it's counterproductive to model that in a poly modeler and the import it into Rhino with TSplines, just model that in Tsplines, you'll end up with a much cleaner result and you'll be able to modify that design with much less effort if you'd like to move points around.
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