A consortium led by Maritime Research Institute Netherlands (MARIN) has initiated the project Optiwise. This EU funded research and innovation project aims to improve and demonstrate energy savings using wind propulsion and hydrodynamic improvements in propulsion.
Optiwise receives funding from the European Union’s Horizon Europe research programme. The EU call requested solutions for energy savings of at least ten per cent for single measures and twenty per cent for combined measures.
In response, the Optiwise consortium defined the following ambition: ‘Our overall ambition is to develop and employ holistic design and control methods for ground-breaking new ship concepts utilising wind propulsion while considering realistic operational scenarios. With these methods, we expect to realise average energy savings between thirty and fifty per cent when compared to equivalent conventional ships while ensuring operational feasibility in a realistic wind climate.’
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Reviewing ship designs
‘We are aware of the huge challenge that the maritime industry is facing to reduce its greenhouse gas emissions according to the IMO ambition, and the gradually introduced regulations to advance this effort,’ says Konstantinos Papoutsis from Euronav NV. ‘Zero emission fuels are assumed to be the main solution. However, sufficient and affordable supply of such fuels is highly uncertain for the foreseeable future, which means that energy saving on board is expected to be increasingly important, both environmentally and economically. We expect that the knowledge built through such R&D efforts will benefit the waterborne industry in its decarbonisation journey.’
Rogier Eggers, Project Manager at MARIN, adds: ‘Fruitful and promising progress has been made with the introduction of new devices to the market, with some 15+ ships sailing commercially with wind propulsion in the world fleet. Wind propulsion is so far mostly applied without re-considering the overall ship design and operations. Whereas that fits within a “business as usual” scenario, it does limit the attainable savings. With Optiwise, we are building on R&D already under development among the consortium partners in the last years and rethinking the design process and energy management of ships with wind propulsion, while still making sure that these ships conform to common operational and regulatory requirements. We thereby expect to enable and showcase much higher savings than what can be seen in the present market applications.’
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Operational use cases
The Optiwise project will pursue its objectives through close inspection of three operational use cases:
- A bulk carrier with Anemoi Rotor Sails;
- A tanker with Ayro OceanWings;
- A passenger vessel with Chantiers de l’Atlantique Solid Sail.
These cases will provide a relevant sample of the world fleet, such that the methods developed in the project should cover the majority of the seagoing shipping fleet. While the wind propulsion type is preselected for each ship type, the exact implementation and change of the ship design and energy management is fully open to further performance enhancement.
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The project scope involves extensive simulations where disciplines such as aerodynamics, hydrodynamics and routing and energy management are holistically brought together. Great attention will be applied to ensure realistic operational applications of the developed designs. Thus, these will be complemented with basin tests to assess manoeuvring and seakeeping, bridge simulations to assess crew operation, and land-based wind propulsion tests to verify better control.
The project will deliver open guidelines for:
- Integrated system optimisation with wind propulsion;
- Smart measurement and control for best operation.
The guidelines will be demonstrated in experimental model tests, bridge simulations and measurements on a full scale land based wind propulsion unit.
Partners working together in this MARIN coordinated project are Core IC, SSPA, Ayro, Chantiers de l’Atlantique, Flikkema Innovation Management & Consultancy, Wärtsilä Netherlands, Universita Degli Studi di Genova, Euronav and Anemoi Marine Technologies.