With some sawing, cutting and sanding I made 3.7 m long hulls and covered them with two layers glass-fibre epoxy. Together the hulls have a weight of 14 kilos The seat shelf, also made of xps foam weighs 3 kilos.

Building with foam does give a light and strong result, but it is difficult to get a tight result. I do not recommend the material for perfectionists.

During making the amas I found an old kayak on Craigslist which, I think is perfect for the centre hull. I got some aluminum tubes from a friend for the akas. I used aluminum road sign mounting hardware to connect the tubes to the floats. For mounting on the canoe I again used plexiglass fittings.

I added stability foils to be able to have a bigger sail. Now I am working on the rig, which again has special requirements because you can no longer reach everything while sailing on such a small boat.

Of course I am curious how this tri will sail. To what wind force can I sit in the canoe or do I stay the most on the seat board? How wet does it sail? Is the stability enough? Does the whole have sufficient lateral resistance for the upwind course without a daggerboard? Before that happens I have to solve some technical problem.

In a while I will inform you about the answers to the above questions. I will also tell you when it becomes a disaster.