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Five fascinating projects tackle the latest offshore and shipping topics


These Joint Industry Projects examine the potential of a partially floating energy hub, improved bubble screen use, a methodology for testing and evaluating control, the mechanical loading of electrical cables, and wind assisted ship propulsion.


HybridEnerSeaHub


To support cost-effective renewable energy production far out at sea there is a need for Operations and Maintenance (O&M) support, safe and efficient energy conversion, as well as the transport and storage of renewable energy. The HybridEnerSeaHub JIP aims to tackle all of these issues by developing a comprehensive design for a partially floating energy hub in the North Sea.


The possibility of using floating modules will be investigated to support the functionality of the energy island in every stage of its lifecycle. This modular approach could make the island more adaptive to the needs of future activities such as floating workshops, and storage facilities can easily be attached and relocated. Furthermore, a partially floating island may have a smaller impact on marine life and the surroundings. On the other hand, motion requirements and mooring loads could potentially set a practical limitation for a floating island. Therefore, a combination of floating modules connected to a reclaimed island will be investigated.


HybridEnerSeaHub started in the autumn of 2019 and will run for 2.5 years.


www.marin.nl/jips/hybridhub | Erik-Jan de Ridder, e.d.ridder@marin.nl CABLE 2


Cable 1 (2017-2019) was an RVO (Netherlands Enterprise Agency) subsidised research project with the aim of studying the use of a semi- static electrical cable for the power take-off from a floating offshore wind turbine. During the project, a fully operational simulation model was developed for assessing the ultimate life and fatigue life of a free hanging electrical cable under the floating offshore wind turbine.


In the sequel Cable 2 JIP, work will continue towards developing the required technology readiness level for real projects. In the new project the electrical cable under a floating offshore wind turbine is just one example. Free spanning, bottom-fixed, floating substation, electric CALM buoy and floating solar in between bottom-fixed wind will be studied as well. The ultimate objective is to obtain a firm grip on the mechanical loading of the electrical cable and its components during the 20-30 year lifetime offshore. Additionally, the project aims to minimise risks and reduce the levelised cost of energy of the (future) offshore renewable energy industry.


www.marin.nl/jips/cable-2 | Jaap de Wilde, j.dewilde@marin.nl


12 report


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