Rotor Ship

One interesting innovation in the Marine industry is a Rotor Ship. It uses tall vertical cylinders to catch wind currents to use as propulsion. It’s like a modern sailboat. The cylinders are probably over 20ft tall on top of the vessel. Here is a link with more information.

https://www.kongsberg.com/maritime/news-and-events/our-stories/comparing-wind-assist-technologies-commercial-maritime-industry/