failed to realise that the hull forms only a minor part of the overall cost because a larger boat would have very much higher fitting-out costs. Consequently, several homebuilt ferrocement boats became unfinished projects, or if finished, then badly executed, overweight, lumpy "horrors". Realising that their boats were not merely disappointing but also unsaleable, some builders insured their boats and deliberately scuppered them for compensation. Insurance companies have long memories of such frauds, and today, even for well-built ferrocemment boats, it has become difficult to get insurance coverage for third-party risks, while comprehensive cover is virtually unattainable. See also Types of concrete François Hennébique François Coignet Faux Bois Concrete ship References External links Ferrocement Educational Network Barcos de ferrocemento (in spanish) Building materials Reinforced concrete Sculpture materials Soil-based building materials Cement