Fully parametric sailboat ornament / pendant

This is an elegant little sailboat model, suitable for decorating a Christmas tree, wearing as a pendant on a necklace, or even an earring if printed really small.

I am quite proud of the parametric sailboat hull design I developed. All hull dimensions and shaping parameters are derived from parametric ratios of hull length. Bezier curves are calculated from those parameters for a smooth hull shape.

If you want a different size boat, don't scale it in the slicer, use OpenSCAD to generate a new STL.

In the OpenSCAD code, the parameter hull_loa (hull length overall) is the primary parameter that controls the size of the boat.

Many other parameters are multiples of hull_loa and can be adjusted to control the shape of the hull: depth of the keel, width of the stern, width of the beam, location of the deepest depth and widest width, location of the hull transitioning from V-shape to round. You can get some strange but plausible hull shapes from playing with these parameters.

The eyelet at the top of the mast can be set to a hook, a ring, or nothing (just a mast top), and you can set the size of the inside of the eyelet hole.