'World's most powerful' subsea trencher undergoing final preparations

The NKT T3600, described as the world’s most powerful subsea trencher, is undergoing final preparations at the UK’s Port of Blyth before becoming operational in 2027. Designed and built by UK-based Osbit, this massive machine delivers 3,600 horsepower and can bury high-voltage power cables up to 5.5 meters (18 feet) below the seabed. It uses both jetting and cutting functions to operate effectively in various soil conditions, addressing the growing demand for robust cable protection in renewable energy infrastructure. NKT, the Danish power cable manufacturer and installer, invested in the T3600 to enhance the offshore power cable ecosystem and improve energy supply security amid increased risks such as sabotage and high maritime activity. The trencher’s deployment and maintenance will be managed by Helix Robotics Solutions Group under a four-year agreement, utilizing Helix’s support vessel. Beyond its technical capabilities, the project supports the local UK economy by involving domestic firms in the trencher’s