Designing a catamaran in this size is a challenge if you would not end up with a floating caravan. I used our practical experience with our Pelican to design this boat.
The maximum height in the central cabin is 1.48m but there is standing height in the hulls. I found the solution for a reasonable ergonomy by using 3 entrances. To step in the hulls, the port or star board entrance is used. The central entrance is very convenient to step in the central seating area. As shown in the drawing, there is amble seat height in the central cabin. In the hulls there height is 1,95m ).
The trapezoid shaped hulls have a fine entrance. The length to beam ratio of the hulls is 1 : 11.
Many KD 860 have been built all over the world, and have proven to be seaworthy and fast (see also spec. for speed prediction). The prediction is very conservative.
The boat is low with good aerodynamic properties. Even with shortened sails the boat will go to windward in contrast to many production catamarans. A factor often forgotten. There is sufficient room for four persons for extended voyages.
The boat is designed in a way that even first time boat builders can build the boat without difficulties. Like my other designs it is a typical (ply)wood/glass fiber Epoxy construction. All 37 CAD drawings are to scale (1 : 1, or 1 : 10) ). A 33 page description will aid you building the boat. All our 26 years of experience designing boats for amateurs is flowing into this design. We chose again plywood as basic material for availability world wide and cost efficiency.