Bernd Kohler

These are study plans. To build this boat you will need to purchase the Full Plans. To have fun on the water a houseboat is a practical solution. The exist already in all possible shapes. Many more...

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...

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...

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...

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...

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...

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...

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*...

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...

These are complete plans. For ECO 62 Study plans, click HERE 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...

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...