I’m not entirely sure that this is going to work out, but it does look kinda cool:
From Inhabitat:
Hydro Lance compares its HARTH pontoon system to logs which sit stable even in rough water. Long narrow pontoons spread the varying forces of waves, rather than being rocked about by them. Because of this characteristic, Hydro Lance vessels should be very smooth to ride in, with only slight rolling, even in very rough seas.
The company’s website has a vintage video discussing the technology, showing a scale demonstration vessel in operation, and discussing some of the other benefits ships built with the HARTH system would offer. They also claim that the HARTH technology would provide seven times the fuel economy per passenger mile.
Practical? Dunno, given today’s fuel pricing….
