You can also define the outline of planing watercraft by simply flexing flat-pack parts like hydro-skis. Conventional boat builders rarely give aerodynamics much of a thought because boats are not meant to fly. But if they did, they'd go a lot faster and consume a good deal less material on the one hand, and fuel on the other.
Most such projects rarely got beyond scale because at the time petrol engines proved to be the only option and these were expensive, not least once regulators phased out two-stroke engines worldwide. Electric motors are changing the dynamic the way that the internal combustion engine replaced the steam, allowing for the development of both aeroplanes and helicopters... which were literally waiting in wings for centuries.
Five years ago this one according to the metadata, static 1/20th scale model in wood.
