"If shipping would be a country, it would be the sixth largest emitter"
I remember somebody pitching the idea of installing wind turbines on ships to reduce the fuel emissions from maritime travel at the first AlumniUnite in Berlin. This looks like a more viable alternative and a really cool/intriguing technology.
LNG-Fuelled Cruise Ferry to Install Rotor Sails
Also heat recovery for on-board electricity generation!
Here's another crazy idea
What do you think of these ideas? Do you have other examples of innovative solutions to reduce fuel emissions from maritime travel?