Sea Technology

JUN 2018

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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Page 44 of 52

44 ST | June 2018 Mooring Rope Recycling In Florida Lankhorst Ropes has set up a mooring rope recycling initiative for the cruise industry. Available at the main cruise terminals in Florida, the retired ropes can be repurposed as picnic sets, plastic poles, planks and even complete landing stages, riverbank bank protection boards and bridges. Cruise lines use some of the most innovative recycling, reducing and reusing strategies in the world. The mooring rope recycling initiative will assist the cruise lines in going further by repurposing synthetic-fi- ber mooring lines previously sent to landfill. The Lankhorst rope re- cycling initiative is scheduled to become available at the following cruise terminals: Port of Miami, Port Everglades and Port Canaveral. More than 15 years ago, Lank- horst Ropes introduced the rope industry's first recycling scheme for retired maritime ropes. Turbulence Characteristics From Tank to Tidal Channel The recently completed In- STREAM project assessed funda- mental differences in turbulent flow measured in the field, generated in a tank and simulated in a numerical model. To mitigate the risk and uncer- tainty associated with turbulent flows in tidal channels, developers often use tank experiments and nu- merical simulations to assess the power and loading performance of a turbine. However, it remains un- clear if these controlled flows can be accurately scaled up to represent the natural turbulence present in tidal channels. The difficulty in translating be- tween model, tank and field en- vironments motivated the In-Situ Turbulence Replication, Evaluation And Measurement (InSTREAM) project. The three-year project was conducted by a research consor- tium comprising six commercial and academic entities in the U.K. and Canada. The project was given the prestigious EUREKA designation and was co-funded by the Offshore Energy Research Association and InnovateUK. As expected, the InSTREAM project found significant differenc- es between the turbulence charac- teristics in the tank and in the field. The 3D eddies observed in the field were about three times larger than those generated in the tank, result- ing in considerable differences in power and fatigue loading. A scaling method has been de- veloped to allow direct comparison and translation between the two flow regimes. This scaling great- ly increases the usefulness of tank testing and numerical modeling and can be reproduced for other test tanks. It also allows site-specific field measurements to be translated to tank experiments, enabling nu- merical models (validated by tank experiments) to be used for reliable and realistic estimation of turbine and array performance. GRT for Siemens Turbine Nacelles MacArtney will supply another generator rotation tool (GRT) to Sie- mens Gamesa Renewable Energy. The GRT creates efficient solutions for long-term storage of nacelles and helps ensure max lifespan of turbines. The nacelles are subject to long- term storage and therefore require maintenance to prevent bearing degradation during standstill. If not regularly rotated, the main bearings may suffer corrosion and quality damage, so it's important to keep components well lubricated at all times. The battery-powered, radio-con- trolled mobile unit supplied by MacArtney is remotely driven under the nacelle with hub and mount- ed generator, while the nacelle is stored on its transport frame. Site Survey for Netherlands Wind Farm Fugro has commenced a site characterization program at the Hollandse Kust (noord) Wind Farm zone. Carried out under a further contract for the Netherlands Enter- prise Agency (, part of the Ministry of Economic Affairs and Climate Policy), the geotechnical workscope comprises seabed in- vestigations and borehole drilling at two lots. Other deliverables include standard and advanced laboratory testing and an integrated geolog- ical/geotechnical soil model that will be used by future developers of the wind farm to prepare their bids. The fieldwork runs from April to June from Fugro vessels. Deploy- ment of two of Fugro's most recent technical innovations will enhance safety and bring improved opera- tional efficiency to the project. The team of geophysical, geological and geotechnical experts will comple- ment the technology to optimize an integrated deliverable. With a total capacity of 700 MW, the Hollandse Kust (noord) Wind Farm Zone is located 10 nautical miles off the west coast of the Neth- erlands. Management System For Wind Turbines Independent wind asset opera- tions management specialist Out- Smart BV has selected Kongsberg Digital AS to provide an integrated management system on the inno- vative Kognifai digital platform and ecosystem. The sophisticated digi- tal solution will be used to manage OutSmart's extensive onshore and offshore wind turbine portfolio. OutSmart provides services to wind farm owners, fund managers and wind project companies in northwestern Europe to maximize the revenues of their wind assets. Part of Deutsche Windtechnik Off- shore and Consulting GmbH, Out- Smart currently operates more than 400 onshore and offshore wind and solar assets (1.8 GW in total) in Ger- many, the Netherlands and the U.K. With a common digital platform providing data storage and data se- curity for the asset owner, the new applications will rationalize the op- erations of OutSmart and its clients and provide access to proven tools, including advanced analytics. ST marine renewables

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