They're in Holland (Google Dynautic to find their site, then click on the English language link). Their hulls look a bit different from those on the Vectorworks version. The beams/tramp sit on a recessed section of hull relative to the section forward of the front beam. Was curious about the effect of this, and any other differences in the designs.

Really a question for the Euro folks (Wouter, etc.) as I doubt any Dynautic boats have made it to the US, but I know the opposite is not the case.