The National Maritime Museum in Greenwich houses the largest collection of scale ship models in the world, many of which are official, contemporary artefacts made by the craftsmen of the navy or the shipbuilders themselves, and ranging from the mid seventeenth century to the present day. As such they represent a three-dimensional archive of unique importance and authority. Treated as historical evidence, they offer more detail than even the best plans, and demonstrate exactly what the ships looked like in a way that even the finest marine painter could not achieve.