Specialised cable layer deployed for subsea power cable project

The project is being developed by the independent power transmission operator ADMIE, the main operator of the Hellenic Electricity Transmission System.

Hellenic Cables, through its 100% subsidiary Fulgor, will produce the 136-km long cable at its Corinth plant.

Jan De Nul Group will install the cable in water up to 980 m using its cable laying trenching support vessel Isaac Newton and the protection of up to 100 m water depth on both shore sides. With a length overall of 138 m, beam of 32 m and loaded draught of 7.3 m, Isaac Newton is dynamic positioning class 2 capable, with two 1,500-kW bow thrusters and one 2,000-kW retractable thruster.

In cable laying mode, Isaac Newton is highly capable, with the ability to install up to 10,700 tonnes of cable equipped with a 7,400-tonne capacity turntable above deck and a 5,000-tonne capacity turntable below deck along with two tensioners of 20 tonnes or as required by the project, chute and auxiliary equipment.

Jan De Nul Group manager offshore cables Wouter Vermeersch said “After the successful execution of the Borkum Riffgrund 2 and Trianel export cable projects in 2018, we are pleased to continue our good relationship with Hellenic Cables through the award of this challenging interconnection project. The cable route runs over very deep waters and a difficult seabed with extremely steep slopes.”