BERG Propulsion has introduced its new OpWind software system, designed to help crews combine the operation of sails and propellers in the most efficient way in various sea conditions.
OpWind automatically optimises engine efficiency with respect to propeller RPM and blade pitch angle when wind propulsion is used as an additional source of vessel propulsion, to maximise fuel savings.
The system automatically senses any sail contribution to propulsion based on a vessel’s operational data and measured parameters, continuously adjusting propeller pitch and speed to optimise the efficiency of the combined operation of propeller and sails.
The software leverages the Swedish company’s existing Dynamic Drive technology to compare theoretical information and calculations about operating with propellers and sails against measured values on board the vessel.
“OpWind is a more advanced system than Dynamic Drive and can be implemented on any ocean-going vessel fitted with any type of sails to identify optimal operating actions,” said BERG Propulsion Chief Technology Officer Emil Cerdier.
“Savings from reduced fuel consumption will depend on the vessel configuration and its operating profile, as well as on how large the sails are, but they will be considerable. Efficiency gains will be available whether it is a newbuilding or retrofit project.”
The system can be run in different modes with settings to either keep a desired maximum speed, maximum fuel consumption or to maintain a constant propeller thrust. It is also possible to use the propeller for onboard power generation while in sailing mode.
A Marine Information Display is also available to visualise performance as part of the system.
