A structural material for boat hulls and decks which has been used by a few boat builders in the last few decades, though it has been known for about a hundred years. Essentially, a basket or armature of iron rods is made in the shape of the hull. The rods are then overlaid with a mesh of thinner welded rods, or even a heavy chicken wire., The whole is then plastered with cement, which is allowed to cure at a slow and carefully-controlled rate. Care is needed at every stage, and skill is needed especially for the plastering process, but if both are present the hull will be durable, pleasing to the eye, and not expensive