GRIP - Green Retrofitting through Improved Propulsion

Funded under the: 7th Framework Programme of the European Union

Period: 01.10.2011 - 31.10.2014

Budget / Funding: 4.162.372 2.959.895 €





Short name Company Country
MARIN Stichting Maritiem Research Instituut Nederland (Coordinator) Netherlands
BV Bureau Veritas Registre International de Classification de Navires et d´Aaeronefs SA France
CMT Center of Maritime Technologies e.V. Germany
FC FINCANTIERI - Cantieri Navali Italiani SPA Italy
HSVA Hamburgische Schiffbau-Versuchsanstalt GmbH Germany
VICUS Vicus Desarrollos Tecnologicos, S.L. Spain
WPNL Wärtsilä Netherlands B.V. Netherlands
Acciona Compania Trasmediterranea SA Spain
IMAWIS IMAWIS Maritime Wirtschafts- und Schiffbauforschung GMBH Germany
ART Arttic France
ULJ Uljanik Brodogradilist DD Croatia

Aims and objectives:

The aim of the GRIP project is to reduce fuel consumption in shipping by 5% (with individual ships up to 10%) and thus reduce exhaust gas emissions. Its first objective is to give a sound basis for the choice of energy-saving devices (ESD) for ship owners. The second is to give insight into the detailed requirements on the device design by performing an analysis of the interaction between hull and propeller and the structural integrity of the device.

For many devices available on the market, it is not clear if and why energy is saved. The choice of an ESD for a ship owner is mainly based on trust. Within GRIP, the most promising ESDs will be studied for several ship types, giving insight into flow changes, relating them to performance improvement and energy savings.

Many ships come from Far Eastern yards who keep the hull lines secret. Therefore, a ship owner cannot order an ESD without returning to the original ship yard. Within GRIP, we will develop a digitising technique for determining the hull lines, allowing the ship owner to order the device from, and have it fitted in any European ship yard.

The project will deliver an early analysis tool for ship owners to characterise the potential energy savings and associated costs by retrofitting a device on a ship. The second deliverable will be an optimised yard process in combination with digitising of the hull lines. The final deliverable is a detailed design procedure for manufacturers, surveyors and hydrodynamic institutes.

The objectives will be validated by designing new ESDs for several ship types. For one of these devices, validation of the energy-saving will be obtained in speed trials.

The consortium consists of world-leading hydrodynamic institutes, propeller designers, a European ship operator, a major European yard, a yard association, and a classification society; bringing together a wealth of knowledge on propeller-hull interaction, structural integrity and manufacturing processes.


More information about the GRIP project can be found at the project website:


CMT involvement:

CMT coordinates the work package 4 “Optimised Yard Processes” and contributes to the research activities in the following fields:

  • Definition of simulation data requirements in respect of retrofitting ships
  • Analysis and modelling of the retrofitting processes, including planning and production. It considers all involved resources, technologies, products and organisational matters.
  • Development of a discrete event simulation based solution which supports the planning and scheduling activities in retrofitting. The simulation tool will be based on Plant Simulation and Simulation Toolkit for Shipbuilding.
  • Full scale validation will assess the reliability of the process models and the simulation tool.
  • Provision of guidelines and typical workflow examples to establish efficient retrofitting.


Note: The project GRIP deals with the installation of energy saving devices dedicated to the propulsion which are located outside of ship. Thus, it is complementary to the European project RETROFIT which is about retrofitting of systems inside a ship and which runs almost exactly in parallel. CMT participates in RETROFIT as well.

Futher information available at:


CMT Corporate Brochure download as pdf


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