The Norwegian Vindskip design from Lade AS uses a specially shaped hull to capture the wind and convert it into forward motion.

Natural gas fired Gas Turbines to get wind speed on the right ‘quarter’ and the combined wind speed provides a boost to get up to 60% fuel savings. All very well till you get in a real blow, it does look like it’ll be a bit of a handful in bad weather, it has big stabilizers like a sailing yacht so maybe it’ll work…anyway it’ll be a figment of computer simulation sthen tank testing for a few years yet.