![ships fitted with rotor sails](https://www.marinelog.com/wp-content/uploads/2022/07/Bergerotorsails-300x225.jpg)
VIDEO: Berge Bulk to fit two vessels with rotor sails
Hard sails or rotor sails? Singapore-based Berge Bulk is trying both options. Last month we reported that the company is to retrofit the 210,000 dwt, 2018-built bulk carrier Berge Olympus with four