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HANSA 10-2021

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SCHIFFSTECHNIK | SHIP TECHNOLOGY Plus present a perfect example of the general trend: Smart meets green. Their Seasam drone uses Artificial Intelligence to inspect the underwater hull condition, identifying type and extent of fouling, se-lecting suitable images of the hull condition and compiling a report within an hour. CMA CGM has been the first major pilot customer, and it looks as if we have another success story in the making here. Karlsruhe Institute of Technology works on bio-inspired selfadhesive foils, which trap air, reducing frictional resistance and biofouling alike submission that the saving potential for global shipping is a staggering 30 bn $, or 0.3 % of the man-made CO 2 emissions. The challenge is to tap into this apparent goldmine, ideally eliminating release of biocides, microplastics and invasive species in ports. A tall order, but not mission impossible, looking at assorted approaches presented at HIPER 2021. For passive air lubrication, bio-mimicking the mechanism of floating fern (Salvinia) using the possibilities of nano-structured surfaces, the devel-opment has progressed from testing in the Hamburg Ship Model Basin to in-situ testing. »A first test under marine conditions was successfully performed by coating a 15 m research vessel with [our] AIRCOAT foil,« reported Stefan Walheim, project leader for (Bio)functional Nanostructured Surfaces at the Karlsruhe Institute of Technology. The bio-inspired selfadhesive foils trap air, reducing frictional resistance and biofouling alike. You may have heard of the silent revolution for antifouling, using ultra-sonic transducers, as presented by Jan Kelling (Hasytec), who received the »Hansa Innovator award« for his work at HIPER 2017. In the four years since then, the technology has been rapidly adopted, mainly for niche areas which are critical for biofouling management and ships that have long idle times. Maybe ultraviolet irradiation as a biocide-free antifouling strategy is at the dawn of a similar success story. The University of Newcastle investigates this approach using thin UV emitters. Research has progressed to studying effects of various parameters (dosage, frequency, etc.), but open questions remain, for example with respect to how robust the emitters are against impacts. Finally, the solution adopted by the market may follow the theme of »Back to the Future«. For centuries, shipping has used frequent cleaning as main strategy to fight biofouling. It is only in the second half of the 19th century that biocidal paints started to become the standard antifouling solution. It is time to reconsider this approach in the light of robotics. Assorted initiatives by IMO, BIMCO, Jotun, NACE and other key stakeholders indicate that grooming or proactive cleaning will play a major role in future ship hull management. Robotic drones not only become increasingly affordable, they also become increasingly capable. This year’s Innovator Award winners Solène Guéré and Nicolas Gambini of Notilus © KIT Smart use of smart technology But how will the future smart and green ships be designed? In principle, not very differently from how we design ships today. However, current tools are adapted to reflect technology changes and customer requirements. For example, the flipside of more flexible, hybrid power systems is more complexity, both in design and operation. Here, smarter design technology helps us handling this complexity. Digital Twins of the energy distribution systems enable detailed insight and exploration of unconventional design options. Chara Georgopoulou (DNV) gave an impressive demonstration of this using the COSSMOS (Complex Ship Systems Modelling and Simulation) platform. For an existing VLCC owned by Euronav, operational data was used to virtually explore what alternative fuel-cell based machinery configurations could achieve, finding 18 % points improvement achievable for an optimized configuration. Just one of many examples, where smarter is greener. And the »Digital Twin« moves from specialists to designer, as simulations continue to get more accessible with pay-as-you-use schemes for software, parallel computing hardware and userfriendly, intuitive software design. Jörg Albrecht (Solarship) with his »Optimization of The Air Circulation in the Design of a Solar Houseboat Catamaran« is a typical example how CFD enters small designer offices, thanks to what Thomas Hildebrandt (Numeca) called the »democratization of CFD«. Digitalization is not a state, it is a road. We have come a long way, and still make significant progress. The key seems to be a combination of advanced IT skills and knowing who the maritime industry ticks. Matteo Barsotti (IB Marine) brought it to a point: »The road to digitalization is not so simple and has to start from the knowledge and full understand-ing of the subject and the effort (also economical) that will be involved.« Ingenuity rules, OK? Covid-19 has put a damper on many activities in the maritime industries, including key fairs and conferences. But where there is a will, there is a way. Blending live presentations on site with video conferencing where necessary, the HIPER conference managed to give us a snapshot of innovations in our industry. It was encouraging to see that the maritime R&D community is vibrant and many steps in the right direction are taken to ensure sustainable business and maritime operations. The key message was clear: No, we won’t back down! Ingenuity (and not Covid-19) rules, OK? The industry is reinventing itself and its innovative drive is impressive. Author: Volker Bertram vb conferences The full proceedings of HIPER ‘21 can be downloaded from the website www.hiper-conf.info 42 HANSA – International Maritime Journal 10 | 2021

SCHIFFSTECHNIK | SHIP TECHNOLOGY Mehr wissen. Besser entscheiden. Zugang zu allen Online-Inhalten Volltextsuche im HANSA-Archiv E-Paper zum Download Print-Ausgaben im Postversand inklusive Sonderbeilagen Ermäßigter Eintritt zu HANSA-Veranstaltungen € 21,– im Monat Direkt buchen auf: www.hansa-online.de/abo Hier geht es zu Ihrem Probe-Abo: HANSA – International Maritime Journal 10 | 2021 43

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