There are moves being made to test ships with modern "sails". Here's a paper published about a cargo ship fitted with 4 sails in 2010. The findings are interest

There are moves being made to test ships with modern "sails". Here's a paper published about a cargo ship fitted with 4 sails in 2010. The findings are interesting with it achieving up to 25% better fuel efficiency when using the sails. https://www.stg-online.org/onTEAM/shipefficiency/programm/06-STG_Ship_Efficiency_2013_100913_Paper.pdf https://www.stg-online.org/onTEAM/shipefficiency/programm/06...