Bernd Kohler

You can find the full plans HERE

DUO 800 The DUO 800 is the biggest of my a-symmetrical catamarans which can be built on any flat surface, a floor or big table. This means that you safe a lot of time and material from the beginning. See the video how it works Long journeys have been...

DUO 480 Adventure The words: “Instant boat building” take on a new meaning.Watch the video clip: A flat surface is sufficient to build the catamaran. The boat is the open version of my successful DUO 480 Jigsaw, another of my parallel...

DUO 900 Study Plans For full plans click HERE The DUO 900 is a quick-to-build, open-bridge catamaran with asymmetrical hulls. The boat was designed for a French fighter pilot who lived in Argentina. His goal was to sail from Buenos Aires to Marseille...

DUO 900 Plans For study plans click HERE The DUO 900 is a quick-to-build, open-bridge catamaran with asymmetrical hulls. The boat was designed for a French fighter pilot who lived in Argentina. His goal was to sail from Buenos Aires to Marseille. Looking...

The ECO 520 is the next catamaran from my jigsaw series. The first was the DUO 480 C. For study plans, click HERE The clue is, that the hulls can be build laying flat on a table. Starting with the outward hull side. To make boat building for a first...

For study plans click HERE MaXi is a trailer-able catamaran for amateur construction. The beam of the boat is 2,44m. It can have also water ballast. The wing seat adds a tremendous amount of stability. With its bouncy device on the mast top, the boat can...

The New ECO 55 is a modification of the Original ECO 55. When you buy the new plans you receive the complete set of the original plans plus the details for the new gunter rig and new leeboards/luffboards.The first ECOnomy cruiser was designed 2003...

Boats around 8 m (27 ft) are most interesting for the average sailor. The harbor fees, maintenance work, car if the boat is in the limits for road transport and the costs to buy but sure to build* are still in the range of affordability. So I have more...

Note: This is the full plan, for the study plans click HERE The ECO 6 looks like the ECO55 cruiser, but it is a completely new design. The small increase of only 0.5m and increasing the total beam to 2.84m created a lot of possibilities. The cabin...

To have fun on the water a houseboat is a practical solution. The exist already in all possible shapes. Many more house as boat, others more boat as house. Here a bit an other approach. The ECO 62 is a catamaran houseboat. Compared to houseboats of...

Free plans. To download the file, click HERE Here is an easy to built small dinghy. 2 m (almost 8 feed) long with a weight of 18 kg ( 60lbs light). The boat served us well on our 11 year journey on our PELICAN catamaran. I could row it till wind...