Blend Surface

[Tom_P]

maybe also check this topic

Boat hulls with smoothly curve stems - how to model

Round bottom boat hulls frequently have stems which curve smoothly into the keel. A NURBS surface with four sides is not a simple fit to such a shape. [Curved Stem Lines 1] I know of three methods to model such a hull side using a single NURBS surface on each side. Each has advantages and disadvantages. A Rhino .3dm file with an example of each method is attached. BowCurve11.3dm (350.3 KB) The surfaces are very close to each other in shape. Note that the orange curves are isolines but do not …