Sea Technology

SEP 2017

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

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Page 53 of 68 September 2017 / st 53 Simulation Testing of Tidal Data Acquisition Engineers associated with the Bourne Tidal Test Site (BTTS) have been field testing a simulation of the data acquisition system that will be in- stalled on the actual tidal turbine test structure. BTTS is going through its last paces for permitting, and once the U.S. Army Corps of Engineers (USACE) signs off, the actual test structure will be in- stalled. To enable tidal device designers and developers to understand how their turbine is performing in the Cape Cod Canal, they will need to know what the current velocity is during all tide cycles. There have been several small- scale demonstrations done in waters near Buzzards Bay, using a series of small parts and home-spun resources to show how data from the FSI ACM current meter can be collected, pro- cessed and transmitted via sophisticat- ed telemetry to computers anywhere in the world. The real-time current data were captured by an ACM-PLUS-200 acoustic current meter from Falmouth Scientific Inc. The data were then pro- cessed using software provided by piRshared. The data will eventually be transmitted through a powerful com- puter that will be installed on top of the tidal test structure. The data will then be transmitted via Wi-Fi and/or cellular service to the website www.mrecone for display. Mooring Installed for Floating Wind Turbine in France BOURBON completed the mooring installation of the first floating wind turbine in France for École Centrale de Nantes (ECN) as part of the European project FLOATGEN at the SEM-REV experimental test site, off Le Croisic. FLOATGEN is a wind turbine with a concrete float designed by Ideol and currently under construction at Saint- Nazaire Port. Its installation is sched- uled for the end of 2017 on the SEM- REV site. The mooring system using synthetic mooring lines was designed and developed by the Ideol team. An anchor-handling tug supply vessel and a WROV were required for installation conditioned by high tensions. BOURBON performed the engi- neering, operations preparation and execution of the mooring system in- stallation. Cable Reburial for Wind Farm Off the Netherlands Global Marine Group (GMG) has successfully completed a remedial cable burial project for Prinses Ama- liawindpark (PAWP), a wind farm off the Netherlands' west coast. PAWP covers an area of about 14 sq. km and comprises 60 wind turbines that are connected by eight in-field cable strings that converge at the central off- shore high-voltage station. The project, operated by Eneco, utilized CWind's in-house resources including the CS Recorder, which has DP2 dynamic positioning; the Q1000, an ROV jet trenching system; and an onshore and offshore engineering team. CWind is part of GMG. The 28-km shore connection cable responsible for delivering power to the onshore substation was installed in 2007 and was trenched below the seabed to depths of up to 3 m. Natural movement of the seabed in the sub- sequent 10 years reduced its burial depth. As such, the main objective of the project was to rebury the cable to ensure its protection in commercial waters and to comply with the site's permit requirements. ST 0.1º/hr 15μg 0.02º/√hr 0.05m/s/√hr 250ppm 250ppm 270cm 3 - 300g - 3W DMU30 Proven MEMS Technology Non-ITAR Multi-MEMS Blending OEM & Custom Solutions 'Tactical Grade' Precision Bias Instability Random Walk Scale Factor Size - Mass - Power DMU30 Precision MEMS IMU ...FOG IMU performance, not price

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