• ‘World’s most powerful’ subsea trencher to bury power cables 18 feet below seabed The NKT T3600 will help meet the high demand for high-voltage power cables and bury cables to depths of up to 5.5 meters below the seabed. • A new subsea trencher, the NKT T3600, has arrived at the UK’s Port of Blyth for fit-out and commissioning. • Designed and built by UK original equipment supplier Osbit, the machine will be put to use by Danish power cable manufacturer and installation firm NKT. • The NKT T3600, described as the world’s most powerful subsea trencher, will be capable of burying cables to depths of up to 5.5 meters below the seabed. • The massive machine will help to meet the high demand for high-voltage power cables required for renewable energy operations. • NKT T3600: The world’s most powerful subsea trencher NKT announced its investment in the NKT T3600 trencher in June 2025.

Article Summaries:

  • The NKT T3600, described as the world’s most powerful subsea trencher, has arrived at the UK’s Port of Blyth for fit‑out and commissioning. Built by UK firm Osbit, the 3,600‑hp machine can bury high‑voltage power cables up to 5.5 m (18 ft) below the seabed using jetting and cutting functions, supporting the growing demand for renewable‑energy infrastructure. NKT will operate the trencher under a four‑year agreement with Helix Robotics, which will provide installation, offshore operations, maintenance and a support vessel. The device is expected to be commercially operational in 2027, with the project touted as a boost to the UK economy and cable‑security.

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