Page 23: of Marine Technology Magazine (October 2013)

Ecosse Subsea Systems (ESS) has completed a $7.5m boul-der clearing and pre-lay trenching project which it claims has been one of the most successful ever conducted for the wind energy sector. As subcontractor to Siem Offshore Contrac- tors (SOC), the Banchory-based subsea specialist completed 86 boulder clearing passes followed by 172 Þ rst and multi- passes over a 90km route during a 13-week boulder clearing and trenching campaign on the EnBW Baltic 2 offshore wind farm project. Several thousand boulders ranging up to 4m in size were cleared from the individual cable routes and ESS performed 260 individual route passes in varying and sometimes chal- lenging soil conditions. EnBW Baltic 2 is an 80 turbine de-velopment located 32km north of R?gen island in the German exclusive economic zone of the Baltic Sea and owned by the German utility company EnBW. The 27 sq. km site spans wa- ter depths ranging from 20m to 45m LAT and has a wide array of soil conditions from Þ ne sands to glacial tilt with areas of gravels and cobbles with numerous boulders. www.ecosse-subsea.com Baltic Wind Success Paves Way for Ecosse Ecosse Subsea Systems managing director, Mike Wilson, with the SCAR subsea plough Marine Technology Reporter 23www.seadiscovery.com MTR #8 (18-33).indd 23MTR #8 (18-33).indd 2310/16/2013 9:23:31 AM10/16/2013 9:23:31 AM