I built a small Van der Stadt yacht a few years ago.
Van der Stat boats are highly regarded in Australia- They seem to bring in a premium price
From a builders perspective the plans were very complete and easy to follow.
From what I can gather the plans for the larger yachts have been drawn to make the building as rapid as possible.
It is possible to get the steel
or aluminium computer cut, and this can save a lot of time.
is not an easy material to weld. It requires a skilled welder with current
practice and some expensive welding gear
It would probably be a lot easier to find a steel
welder who could produce a first class product.
Aluminium boats can suffer from sudden catastrophic failure if the wrong combination of circumstances occurs.
If you work out how much the total boat will cost you you could get a horrible surprise.
Figure on a least 4000 hours of highly skilled work. plus all fittings and materials.