Anemoi, Hafnia, GSI and DNV team up to unlock full potential of rotor sails on MR tankers

UK-based wind-assisted propulsion provider Anemoi Marine Technologies, Singapore-based tanker owner Hafnia, China-based shipbuilder Guangzhou Shipyard International (GSI), and Norwegian class society DNV have embarked on a collaboration to develop the integration design of rotor sails suitable for installation on 50,000 dwt medium-range (MR) tankers.

The companies recently signed a joint development project (JDP) to develop a new generation of environmentally friendly rotor sail vessel designs to increase the efficiency of MR tankers within the wider global fleet.

As part of the project, Anemoi and Hafnia will undertake several engineering studies to establish specifications related to how rotor sails can be efficiently installed on the deck of MR tankers, alongside additional electrical and control system layouts for these vessels.

In addition, the studies will include calculations to examine how rotor sails can improve the Energy Efficiency Design Index (EEDI) and Energy Efficiency Existing Ship Index (EEXI) values of existing and future MR tankers.

GSI will apply its naval architecture and marine engineering principles to develop essential technical documentation for the new rotor sail’s design integration, while DNV will undertake an