Bernd Kohler

The ECO 55 power catamaran is an affordable DIY power catamaran. As the owner proved the boat is a capable coastal cruiser. The inside layout is the same as for the ECO55 sail version but the underwater shape is changed. The cockpit is wider and has a...

A new boat type? Why not? The idea, a personal multihull cruiser for the least amount of work and cost. I like Proas but I do not like shunting. It is okay for long distances but not, for instance, in a channel or river with a lot of traffic like here...

Note: This plan has been updated and amended. It can now be built with a unique rig.  It is a rig with a vertical mainsail shortening system, normal stays, and a jib. It is a further development of my mast top rotor, which I developed for the Tiny...