The answer that B9 is proposing is a coastal cargo ship that combines massive carbon-fibre DynaRig sails - such as those used on the superyacht, the Maltese Falcon - with an engine that runs on bio-gas made from food waste using a process called anaerobicdigestion.
Harvest Power is currently in the process of building two large anaerobicdigestion facilities, one in Richmond, outside Vancouver, Canada and the other in London, Ontario.