Rotech Subsea, the technology-driven provider of innovative subsea tools to the global energy industry, has delivered key remedial export cable burial operations at a major US offshore wind farm.
The Aberdeen-based subsea jet trenching and excavation specialist mobilized its market leading TRS1 Controlled Flow Excavation (CFE) tool for the Eastern Seaboard in April 2023 to carry out the export cable burial scope of works for the Europe-based world leader in offshore energy remediation.
Operating in water depths ranging from 8m-15m, Rotech’s TRS1 spread of equipment was deployed by the project team from the aft of a 152t utility vessel using the onboard A-Frame, with dyneema ropes utilized to orientate the cutting-edge tool. The operation - which comprised the burial of 2 sections of export cable totaling 280m in length in soils ranging from soft sands to low to medium density silt - was deemed a huge success, with client burial requirements of 2.0m DoL achieved in just 1 pass. At a progress rate of 3m/min, trench depths up to 2.8m were achieved with trench widths varying between 3.5m - 5.5m.
TRS1. Credit: Rotech Subsea
US demand grows
Already established as subsea jet trenching and excavation sector leader in Europe, Asia and the Middle East, Rotech Subsea is experiencing a surge of interest in the United States and Americas. Following successful deployments in the Caribbean and US, the contract book for the company’s state-of-the-art tools is filling up for 2023 and 2024 with new equipment being engineered to help meet demand.
After recently attending Offshore Technology Conference (OTC) in Houston and client meetings in Boston, to showcase its new technology, Rotech Subsea announced it will carry out multiple trenching works in US waters in 2023 and 2024 for a major subsea cable installation player. With further contracts to be announced, 2023 is set to be the company’s busiest year on record in the region.
