Bernd Kohler

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...

A kid size kayak for kids. 10' x 19.5" {3.05m x 49.5cm} suitable for kids up to about 90 lbs {41kg} Weight about 15 lbs {7kg} For printed plans for Kidyak, click HERE The Kidyak is a child sized skin-on-frame kayak, suitable for kids up to about 90 lbs...

DUO 480C under construction in New Zealand   This design cost me more time than I thought it would, but the result is precisely what I wanted: an easy to built boat with a lot of possibilities for the weekend sailor. With its beam of only 2,30m (7...

I have built almost anything that can sail. At the age of 12 my first sail thing, an ice "boat". I used skates which had to be mounted on shoes as runners. Big fun, very fast, only the lake was too short. Then there where monohulls of various sizes...

The DUO 425 was the first parallel rig cat designed for amateur construction. The prototype was shown at the boat show in Duesseldorf in 1984. We have the most experience with this sort of rigs. Many very fast and record breaking catamarans used and use...

  The KD 650 is an other approach for an affordable trailer catamaran for amateur construction. The boat is designed for coastal sailing and will have a good turn of speed with its efficient Gunter rig. The boat is easy to build with...