Thanks for that X1Wind tetrahedron link - I saw a similar one recently that used a truncated pyramid construction, with the blades rotating between the front an

Thanks for that X1Wind tetrahedron link - I saw a similar one recently that used a truncated pyramid construction, with the blades rotating between the front and back pairs of legs. Interestingly with these size is not the be-all and end-all. If you make them so that they fit in the average port (towed by an average pair of tugs), the range of locations where they can be installed increases a lot. As does the availability of ships usable for the install.