I think a good thing introduced by the very bad weather in Houston in 2017 is the Web Conference. Perhaps we can introduce special working group web sessions for 5-6 people with a specific task and then they could make a report for the relevant working groups.”

Tobias: “Within CRS initially we tend to focus on one broad topic and then we eventually focus on one narrow part of that and by the very nature of the process, some people will contribute more than others. Perhaps the subject should be broadened to include other tools or evaluations so everyone has a task, not just the specialists.”

Olav: “A key point is how to distribute tasks and award projects to generate interest. Sometimes we don’t necessarily follow the best way to progress the research. But we do it to get engagement and different input for a future activity.”

Can you give an example of a research finding based on joint expertise or knowledge within your group?

Tobias: “Undoubtedly, the biggest outcome for us all is the propeller analysis tool PROCAL. The software developers of course developed the tool but there are also a lot of design

tasks, validation tasks and evaluations coming from different members, which have made it a very successful, useful tool.”

Olav: “We have seen a lot of contributions from different companies regarding safety analysis. There are the evident benefits of the MARIN model test results but it is hard to understand what is going on because we don’t have the measurements that we would like to have for the safety aspects. It is very much a collaborative process to explain what’s going on.” He laughs: “There have been a lot of hypotheses and theories as we go, which have changed surprisingly often!”

Loic: “With the SPEED project there are many generic lines about friction resistance and turbulence models and about how to modelise in PROCAL. But I think the best result of the working group is actually the progress that each member has made in the way they perform their propulsion computations. People are becoming better and better and learning a lot about how to perform resistance, appendage and open water computations.”

An odd question perhaps, but what are the benefits of being a chairman? Would you recommend it?

Tobias: “Being a chairman gives you a very good insight overall, and you get to lead

the work. This overview is important when we put together our presentations and make the summaries for the Annual General Meeting. I think this is very valuable.”

Olav: “Personally I like being active and to have a specific task. It is about meeting people, a learning experience and about doing something for the members – delivering good products to a nice group of people who I enjoy spending time with. There are many rewards, especially seeing that we are making progress.”

Loic: “Sometimes during the life of a working group it gets ‘stuck’. So you have to reconsider, and propose something in order to get it moving again. It is challenging, but it is also great when you are working with such enthusiastic people. I would encourage members to have this experience at least once.”

Showing the camaraderie between the group, Olav jokes: “You need time for preparations and by the way Tobias – ‘have you finished your report for the AGM?’” “Yes, for once!” Tobias laughs.

Can you reflect on the networking and educational aspects of CRS?

Tobias: “For us networking is an important part at both the meetings and at the dinner

CRS blood groups, 1969-2019 10 report

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