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Interconnecting HDD landing for sustainable energy

Visser & Smit Hanab, together with its English partner Volker Trenchless Solutions, has had a (computer) controlled drilling or HDD carried out in Scotland to directly transport the electricity produced by an offshore wind farm.


Challenging conditions

Drilling through rot is always a challenge, here because of the very hard quartz layers. he landing is part of the Carradale to Arran Interconnector project, which required the replacement of an undersea electricity cable. The work will be done in a secluded location along the shore north of Port Crannaich.

Visser & Smit Hanab is responsible for pulling in the HV cable to reach the connection point on the mainland. This waterfall has a length of 435 meters and an excessive height difference of 65 meters. The 16” High Density Poly Ethylene (HDPE) pipe was installed after enlarging the borehole with a 23” hole opener.