Subsea Cable

Following the successful upgrade on the Indigo Submarine Cable, SUBCO is once again using Ciena technologies to provide a resilient and reliable undersea corridor between Australia and Europe via the Oman Australia Cable (OAC).

NKT has successfully produced and installed the turnkey HVDC power cable system project for offshore wind park Dogger Bank A. Now the first phase of Dogger Bank Wind Farm has produced first power. The project marks the milestone as the first offshore wind park in the UK to be connected to shore by a HVDC power cable system.

Royal IHC is pleased to announce that a contract has been secured to supply its client, Caldwell Marine International (CMI), with a new build ‘Amphibious Hi-Traq^® Jetter’.

TELE-FONIKA Kable (TFK) a global supplier of wire and cable systems for the renewable energy sector, alongside JDR Cable Systems (JDR), a global subsea cable and umbilical supplier, have been awarded a contract with ORLEN Group and Northland Power for the Baltic Power wind farm in Poland.

A consortium of Jan De Nul Group and Hellenic Cables will design, manufacture, transport and install a package of four 220 kV HVAC export cables to connect the Polish offshore wind farms Baltyk II and Baltyk III to shore. Upon completion, these wind farms developed by the joint venture of Equinor and Polenergia will provide green electricity to more than two million Polish households.

Rotech Subsea has successfully delivered cable de-burial, cut and recovery and cable burial work for a major subsea solutions provider in the North Sea, offshore Germany.

Deploying its TRS2 jet trencher, Aberdeen headquartered Rotech Subsea completed deburial of over 600m of damaged subsea umbilical buried at 4m MSBL. Operating in very soft sands which backfilled quickly the TRS2 tool reached a deburial depth of 5m+ in just one pass, positioned at 2.5m – 3m above the seabed progressing at 4m/min during trenching operations.

Rotech’s patented RSG-C subsea tool was deployed to grab and cut the cable in two locations, recovering the cable to deck. Survey positioning of the tool was used to locate the RSG-C tool in the correct location and the tool-mounted sonar and camera were used to confirm the cable had been successfully grabbed and latched within the cutter. The RSG-C completed the cut of the 100mm cable in < 10 minutes with the cable was recovered to deck.

(Image credit: Rotech Subsea)

Post-lay trenching operations saw the TRS2 deployed. It completed trenching in two passes - the first at 3m/min with the second pass completed at 5m/min. For both passes the TRS2 tool was operating at 2m above the seabed.

Speaking about yet another European OWF scope delivered on time and on budget, Rotech Subsea Director of Subsea, Stephen Cochrane, commented: “This three-part scope is typical of the offshore wind subsea cable remedial and trenching works we have become known for in Europe. We deployed our TRS2 tool for the cable trenching because its sector-leading high flow allows for very large amounts of soil to be displaced quickly.

“Though our range of non-contact CFE, Suspended Jet & Hybrid Jet Trenching tools have been in huge demand in Asia and the US recently, Europe remains a key market for us and it was great to deliver yet another successful OWF scope for a long-term client in European waters.”

Rotech Subsea’s research, development and engineering team has created a suite of 18 sector-leading non-contact CFE, Suspended Jet & Hybrid Jet Trenching tools in-house at its Aberdeen HQ. With enhanced capabilities, Rotech Subsea’s CFE & Hybrid Jet Trenching suite of tools is firmly established as the method of choice for offshore wind farm cable trenching and excavation in Europe and beyond.

Jan De Nul Group has ordered an extra-large cable-laying vessel, the Fleeming Jenkin, at the CMHI Haimen shipyard.

NEC Corporation announces that the Patara-2 submarine cable system connecting multiple islands across Indonesia is complete and operational. This cable is owned by Telkom Indonesia, the biggest digital telco company in Indonesia, which is strongly committed to accelerating the country’s digitalization.

Rotech Subsea, a leading provider of subsea jet trenching and excavation tools to the energy industry, has been active in Asia again, delivering cable de-burial, post-lay and remedial trenching operations for a long-term client on a wind farm offshore Taiwan. The contract saw Rotech mobilize its TRS1 LD Jet Trencher to execute the scope of works.

NKT has been awarded a combination of five on- and offshore power cable projects embedded in a long-term framework agreement by the German TSO 50Hertz. With a combined value of approx. EUR 3.5bn, the order is a new company record for NKT.

NEC Corporation has successfully completed a long-distance field trial of an optical submarine cable system using a new transponder that, according to NEC research, has the world's highest level of transmission performance of 800 gigabits per second (Gbps).

The Bermuda Business Development Agency (BDA) welcomes the announcement by Google that Bermuda will be the home of a new transatlantic cable, positioning Bermuda as the digital hub of the Atlantic.