ABB powers new offshore wind vessel

The 230-metre vessel is scheduled for delivery in 2028 and will transport large converter stations from manufacturers in Asia and Europe to Allseas’ construction vessel Pioneering Spirit for offshore installation.

“Grand Tour demonstrates GSI’s capabilities in delivering even the most complex vessels and marks another exciting collaboration with our long-standing and trusted partner, ABB,” said Zhou Xuhui, president of Guangzhou Shipyard International.

Converter stations are critical components of offshore power transmission systems, converting alternating current generated by wind turbines into direct current for transmission to shore.

Grand Tour will be capable of carrying loads of up to 40,000 metric tonnes on its stern deck. Its semi-submersible design will allow the main deck to be lowered below the waterline, enabling converter stations to be floated directly onboard. The vessel will then position itself alongside Pioneering Spirit during transfer operations.

ABB will provide four 3.5MW nozzled Azipod propulsion units, designed to provide the thrust required for bollard pull and dynamic positioning. The 360-degree rotating units will allow precise manoeuvring, including positioning at the bow of Pioneering Spirit.

ABB said the gearless Azipod system can reduce mechanical losses, fuel consumption, noise and vibration compared with conventional mechanical thrusters. Its design also reduces the need for lubrication oil and maintenance.

The wider package includes a medium-voltage AC power plant in a closed-ring configuration, controlled by ABB’s PEMS power and energy management system and supported by an enhanced power plant protection system. Remote condition monitoring and maintenance capabilities are also included.

Rune Braastad, president of ABB’s Marine & Ports division, said the project demonstrated the value of integrated technology in heavy-lift operations.

“Projects like this demonstrate how advanced, integrated systems can make operations leaner, cleaner and more efficient,” he said, adding that the technology could improve performance and safety while opening new market opportunities.