New TROV begins cable works

Van OordVan Oord used its new trencher, the Dig-It, for the first time this week on the Borkum Riffgrund 2 project in the German sector of the North Sea.

The Dig-It, also known as the Q Trencher 1600, is the most powerful of the ‘Q’ trencher series and an improvement over earlier models, with a total installed power of 1,200kW. After a cable has been laid on the seabed, Van Oord’s vessel will bury it to required depth. Depending on the configuration and soil characteristics, the trencher can bury cables down to 3m depth.

The Dig-It is a Tracked Remotely Operated Vehicle (TROV), with its tracks as its primary method of propulsion. The trencher can be operated in two different modes, jetting and chain cutting.

In 2016, Ørsted contracted Van Oord to transport, install and bury infield cables for the Borkum Riffgrund 2 offshore wind farm. Van Oord has deployed its cable-laying vessel Nexus to install the infield cables, including interlink cables to the Borkum Riffgrund 1 Offshore Substation.

Nexus started cable installation on 15th April, while the Dig-It, mobilised on the offshore supply vessel Rem Saltire, started burying the cables this week. The cable installation works should be finished in July 2018. Once it is completed in 2019, the offshore wind farm will deliver green energy to 460,000 households.

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