Nexans wins contract to protect Baltic 1 subsea cables

Cabling company Nexans has been called in by Energie Baden-Wurttemberg (EnBW) to use its specialised Capjet trenching system to protect the high voltage (HV) subsea power export cables for Baltic 1, Germany’s first commercial offshore wind farm.

The Baltic 1 wind farm, comprising 21 wind turbines with a total capacity of 48MW, is located around 16km offshore from the German coast and is connected to the onshore grid by three 170kV AC cables, which make landfall close to the city of Rostock.

Because this area of the Baltic Sea is relatively shallow, with typical depth ranging from 16-19 metres, it is vital that the power export cables are protected against damage by sea anchors and fishing activities.

So in December 2010, Nexans started work on a four-week contract to protect a total length of some 50km of cables by burying them into the seabed to a depth of around 1.5 metres.