CRS members and organisation Starting with seven members in 1969, the CRS has grown steadily, counting 23 member institutes and companies in 2019, spread over Europe and North America. Members are roughly divided into six groups: classification societies, navies, (commercial) operators, research institutes, shipyards and suppliers. This unique blend of ‘blood types’ ensures that CRS research is versatile and that broad expertise is available within the CRS community. A representative steering group coordinates the annual Open Meetings and General Meetings, stimulating the initiation of new projects, and guarding the quality of the research results.

Sea Loads working Group, 1993

Design Index mandatory for all new ships. These developments instigated a series of projects addressing efficiency and emissions of the power train: Ship Performance and Fouling (ECONSHIPS-FOULING, 2008), Ship Emission Prediction (EMISS, 2010) and Design for Service (DESERV, 2013). To gather reliable operational data in a systematic way, a dedicated measurement campaign was set up in In-Service Monitoring (CRISM, 2012), providing valuable information for modelling and validation purposes. Recently, research into ‘green propulsion’ is carried out in Learning about Energy- Saving Devices (LSD, 2017).

Computational Fluid Dynamics made its entrance in CRS with the OSCAR project (2011), exploring the application of CFD to problems which had been addressed so far with a combination of experiments, finite and boundary element methods, and empiricism. Quite soon, CFD methods were applied in all areas; powering: SPEED (2012) and SPEED2DESIGN (2016); cavitation: SHARCS (2013, 2016); seakeeping: RAW+ (2012), RAW++ (2016) and SEAFD (2015). The availability of user-friendly optimisation toolboxes was quickly exploited in PROPAGATE (2016, 2019) to develop an automated propeller design tool. The use of new materials for propellers and the related issues, such as erosion, are the subject of multi-disciplinary research in Composite Propellers (COMPROP, 2014, 2018).

Today, the membership fee is 65,000 Euros per year, giving a 1.5 million euro annual budget, enabling about 14 simultaneous research projects. The logistics are coordinated by a (MARIN-manned) secretariat, which also maintains an ever-growing digital database of results, including reports and software.

CRS, quo vadis? Within a rapidly changing world, where new techniques emerge and become mature faster than ever before, CRS is facing the challenge to maintain its relevance for the maritime world, and for its members in particular. In the past, CRS has demonstrated its capability to grow and change, adopting CFD and optimisation methods and bringing new tools to the desktops of the member companies. New trends and developments, such as data science and autonomous vehicles, provide new opportunities for research and will define the main CRS themes for the decades ahead. The future is in our hands ...

After 50 years of cooperative research, there is plenty of reason for the CRS community to look back with pride. With over 120 projects completed, one can safely state that the CRS concept – ‘research of the members, by the members, for the members’ – has stood the test of time. The secret of this success is a dynamic group of research-oriented, open- minded people, willing to share pre-competitive knowledge by real cooperation. This is the true CRS treasure, which must be preserved for the next 50 years!



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