A wide range of prominent maritime research presented

The 16th NMU DNV GL Workshop gathered over 80 participants from six countries from the Northern Europe's leading academies in maritime research. Over 50 presentations of recent research was made during the two days.

Well-attended workshop.

The event was hosted by Chalmers and held at Lindholmen Science Park in Gothenburg. Focus of the workshop was on the topics maritime safety, energy sources and energy efficiency, and the role of sensors and monitoring in optimising operations. The programme was well-filled with presentations mainly from people within the academic world but also some companies and organisations, and there were several parallel sessions to manage time for all speakers during the two days.

The workshop kicked-off with Knut-Erik Knutssen, researcher at DNV GL, who talked about condition monitoring in the maritime industry. Condition monitoring means that you can know when a failure is about to happen, more or less, and he meant that shipping needed a simplified Reliability Centered Maintenance, RCM.
- DNV GL's goal is to reduce accidents with 90% by 2050. Here digitalisation of shipping has an important role in many aspects. For example we have now started a project to develop a system for making a digital twin for ships which you can sail in simulators for hundreds of hours before you actually build the ship, knowing its weaknesses and improving them on beforehand, said Knut-Erik Knutssen.

 

Åsa Burman, Director of Lighthouse, was one of the Keynote speakers who opened the workshop, and she talked about Lighthouse today - Lighthouse tomorrow.

Fredrik Ahlgren from Kalmar Maritime Academy at Linnaeus University has only been a PhD student for a bit over a year, but thanks to the possibility he has had to access all data of the cruise ship MS Birka, built in 2004, he has achieved a lot of interesting facts already. Just by studying already existing data from the ship, no new technology. For example calculations made show that 1/5 of the ships electrical consumption could come from waste heat recovery by ORC. Also, when checking the routes and speed for the ship, it became apparent that 85% of the time the ship sailed between 8-14 knots, although made for achieving 21 knots.
- Theoretically they could throw out three of four engines of the ship, save fuel, weight and space, since they only need to use one, said Fredrik Ahlgren.
The fact that ships often are built for something else than they are used for was a fact also highlighted by Chalmers researchers Francesco Baldi and Ulrik Larsen.

Other interesting presentations the first day was for example made by Ivan Stenius from KTH who presented their venture on underwater technology and autonomous submarines (more on this topic in a coming article), Aalto University's Floris Goerlandt talked about his work on a new type of risk-informed collision alert system, and Hannes Johnsson from Chalmers talked about how companies energy management activities often are less successful due to the lack of knowledge and education for the staff. 

 

Enhancing energy efficiency was the topic of Fredrik Ahlgren from Kalmar Maritime Academy's presentation.

During the second day DNV GL started of again, this time with Michael Lehmann discussing LNG well-to-wake analysis, concluding that today's analysis made regarding greenhouse gas emissions shows that LNG doesn't necessarily have any significant advantage over bunker fuel. However, he did point out a few things that today's studies hasn't looked at, which could change the prognosis.

In a session on marine technology Anders Rosén from KTH presented their ship dynamics research programme.
- Ships are growing in size being able to carry more cargo, but this has affected stability, and we have more accidents today, said Anders Rosén.
The programme which collaborate closely with Seaware and Wallenius Marine look at a wide range of aspects on how to increase ship stability. For example they develop experimental methods for roll damping quantification, and look into route planning, route optimisation and real-time decision support and counteraction.

The day also saw for example Christian Finnsgård from SSPA presenting a study of shippers’ ability to demand and manage the consequences of slow steaming maritime transportation services in their supply chains, Lena Granhag from Chalmers discussed the possibility to increase energy efficiency in ships by reduced biofouling on ship hulls, and Wengang Mao from the same department talked about windsail propulsion for green shipping, something that many are convinced will be revisited on a larger scale in the shipping industry in the future.

 

Anders Rosén from KTH who talked about their ship dynamics research.
 
A Bond graph approach to improve the energy efficiency of ships, topic for Sepideh Jafarzadeh from the Norwegian University of Science and Technology.

Hosts of the event: Dr. Christos Chryssakis at DNV GL and Professor Jonas Ringsberg, Chalmers.

Mikael Hinnerson from the Swedish Sea Rescue Society presented a new procedure for large rescue operations they are working on developing.