- A Norwegian design would use the high sides of a cargo ship as sails
- The designers say it could save as much as 60% on fuel costs, 80% on CO2 emissions
- The world's first VindSkip could slip into the water by 2019
According to a recent study
, shipping accounts for around 3% of global CO2 emissions. Not surprising when you consider that the engines of the world's estimated 90,000 cargo ships are in use 24 hours a day while traveling.
Futuristic concepts for container ships powered by alternative energy range from windmill-powered propellers to banks of vertical metal sails. Even though most are still on the drawing board, one concept i