Concrete boat floating on water

In 2011 we (Marge architects) made a concrete boat during a one week workshop. Everything was calculated, but still the moment of getting it in the water was nerve-racking. But it stayed afloat! The methode used was a very old way of making concrete really thin. The boat weighs 416 kg, but it can displace around 800 kg of water. So Archimedes says that this concrete boat floats. Turns out he was right. Check out more about this project on our website.