In theory Wantoo needs 1.2 feet (36 centimeters) water.
When there is wind the leeward hull will be pushed a little deeper into the water.
The tubes are Aluminium alloy.
I added a list of costs and weights to the Wantoo folder (Files directory).

I was amazed to hear from a shipyard that is specialized in wood-epoxy that they can build hulls like the Wantoo ww hull in only 80 hours (I calculated 100 hours). The secret is panels that are laser cut and almost no bulkheads. In serie production the building time can be reduced even more.

Nol

--- In harryproa@yahoogroups.com.au, Carlos Solanilla <carlosproacarlos@...> wrote:
>
> Nol
> Where you able to predict cost of building the hull, are the tubes Al alloy or steel?
> Could it sails in 4 ft of water?
>
> Sent from my iPad
>