interesting. but why the completely different and separate hull shape above and below the waterline? that works fine as long as you are on flat water, but the slightest wave or turn and you loose efficiency....
Note that I did that 3D in an hours or so, so there should be some differences when I work some more on it.
When I did that 3D hull I first gave it a smooth hull, the to the bow-wave from climbing to high up the hull, i added a "brake" (I don't have the word in my mind at the moment.), But to make her look a bit different but also give her that secondary Wave-brake I formed that hideous form in the upper hull part.(reminds me off some old Japanese-fishing boats) but that hull form add a extra beam of 10-25 cm. some are going to the beamy side-walk and whatever that is under deck. The superstructure is in fact not so beamy.
edit: If you have an sugestion abaout what more I can do to here (hull and so on) just come with it, and I will see what I can do! Oh I can perhaps be more easy if you want to go all out, just draw some simple lines in pant to show me what you mean about that and this. If there are something!