Wifi Wave impacts on Fixed turbines


With a growing number of offshore wind farms, more and more damage is being experienced due to steep or breaking waves. The Wave impacts on Fixed turbines (WiFi) JIP primarily aims to better understand the influence of steep and breaking waves on the foundation and secondary structures of offshore wind turbines and to avoid damage by better calculation requirements in Guidelines and Standards for the design of the foundations.


Monopile and jacket type structures will be taken into consideration. Research will consist of nume-


rical studies, model tests and full-scale measure- ments covering hydrodynamic and structural topics.


The fifteen participants include research institutes, classification societies, contractors, engineering and utility companies. After the JIP’s conclusion, the next step in foundation design and classification can be taken. WiFi will run until Q4 of 2015. Contact: Marcus Schiere, m.schiere@marin.nl


HELIOS Safe helicopter operations for offshore ships


Helicopter operations are essential for offshore operations but equipment and procedures have basically remained unchanged for decades. Helicopter transport is considered amongst the higher risks to offshore workers and strict landing deck motion limits are enforced to maintain safe operations. Even in mild sea states, vessels often have to leave station for crew changes in port, which leads to high rates of downtime.


Technology to improve safety and extend work- ability is available but is not certified for use in civil aviation. The Helios project set out to identify these new approaches, investigate and demonstrate their merits and work out how they can be practically introduced and integrated into the regulations for offshore flying operations.


Initiated by MARIN and Dutch Aerospace Laboratory NLR, the project is carried out in a consortium, which includes oil companies, helicopter operators, aircraft and systems manufacturers, government/ regulatory authorities and technology institutes. The first phase completed in December 2012 and Phase II will run through to 2014 and will concentrate on quiescent period ship motion predictions, helmet mounted displays for assisted approach and landing, landing nets and deck lock systems for increased aircraft stability on deck. Contact: Jos Koning, j.koning@marin.nl


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