Development of an industry recognised benchmark for Ship Energy Efficiency Solutions

to increase confidence in numerical methods and create a basis for further ship performance improvement and industry digitalisation

The main objective of the proposing Joint Research project (JoRes JRP) is to join the industry efforts and gather the full set of the ship performance data (model test results, Computational Fluid Dynamic (CFD) calculations and ship scale measurements) and increase knowledge on the important propeller/hull interaction effects to better understand the ship efficiency potential.
The project started in 2019 and will be completed in 2022.


  • Increase knowledge on the important propeller/hull interaction effects, critical to the design of efficient propellers and Energy Saving Devices (ESDs), as well as hull design.
  • Develop a full set of industry recognised benchmark cases for ship and model scale validation of CFD computations.
  • Collect the aforementioned results in convenient and quickly accessible web-based format.
  • Increase confidence primarily in ship scale CFD and assess their performance compared to traditional model testing.
  • Improve understanding of the model tests correlation allowance coefficient Ca.
  • Prepare fully accessible data for further development of the ship digital twin concept.


“The proposed JoRes presents a great opportunity to better understand the performance challenges facing ship designers and operators.

It can also help them find better solutions as they seek to meet IMO pollution targets. This is a very comprehensive and timely initiative which will increase confidence within the wider industry in ship scale CFD performance predictions.”

Dr. Dejan Radosavljevic, Director, Marine, Siemens Industry Software


“The focus on full scale performance predictions based on CFD in this JoRes project is well in line with the vision of Wartsila Propulsion. A joint approach is the most logical way to reach the final goal.”

Norbert Bulten, Product Performance Manager, Wartsila


Project Innovations

  • Unique ship-scale PIV measurements of propeller flow to address wake scale effect uncertainty.
  • Propeller thrust measurements during the sea trials to separate the propeller efficiency from the propulsive efficiency of the hull-propeller system.
  • Assessment of sea state conditions by self-propelled buoy C-DRONE.
  • Model tests measurement will be performed in two reputable facilities in order to assess repeatability.
  • The tests will be made after the sea trials to ensure the trials conditions are replicated.