Re:Rhino3d and DELFTShip

[Marven]

stringybark wrote:

IGES works if the hull curvature is simple but if the hull has complex curves (as e.g. in historical ships), then IGES breaks the surface into a number of parts

It has nothing to do with curvature, you’ll need to maintain a regular controlnet: all faces should be made out of 4 points, and each internal point should be connected to 4 faces. Only regular surfaces like this can be converted to a single NURBS surface. Since NURBS surface cannot handle 3 or 5 side surfaces these parts should be converted into smaller 4 sided surfaces.