Few days back I uploaded a new plugin on
Food4Rhino.
SeaHorse Hulls is a parametric hull modeler for catamaran hulls, or any slender type hull. It can be used for trimaran amas and akas as well. For the moment, the free version only supports a few basic parameters and I'm still pondering whether to keep the complete toolset free or license it somehow. The complete toolset allows much more control on the shape of the hull, both under and over the water. The tools is already used on 4 production catamarans and development is still underway.
