> For years my childhood brain assumed that concrete was just one of the materials people commonly used to build boats. It was, depending upon availability of

> For years my childhood brain assumed that concrete was just one of the materials people commonly used to build boats. It was, depending upon availability of steel. So boat and ship were not uncommon, maybe less so with canoes. https://en.wikipedia.org/wiki/Concrete_ship https://en.wikipedia.org/wiki/Concrete_ship https://www.iwm.org.uk/collections/item/object/30018296 https://www.iwm.org.uk/collections/item/object/30018296 There is a grounded concrete barge near where I grew up, now largely buried in sand dunes. https://www.flickr.com/photos/36891793@N08/8033301173/ https://www.flickr.com/photos/36891793@N08/8033301173/