German offshore foundation manufacturer Steelwind Nordenham GmbH has successfully loaded one of its largest-ever monopiles — weighing 2,182 tonnes, measuring 119 meters in length, and 10 meters in diameter — onto Boskalis’ semi-submersible heavy-lift vessel Mighty Servant 1.
According to Steelwind’s technical data, the company can produce monopiles of up to 2,800 tonnes in weight, 120 meters in length, and 11.5 meters in diameter, ranking among the largest manufacturers in the global offshore wind industry.
The vessel is currently en route to the U.S. East Coast, with arrival in Providence, Rhode Island, expected around 29 October 2025.
The Mighty Servant 1, operated by Dutch heavy-lift specialist Boskalis, is one of the most capable semi-submersible vessels in the offshore transport sector.
Principal particulars:
- Length overall: 190.03 m
- Breadth moulded/max: 50.00 m
- Depth: 12.00 m
- Draft submerged at FPP/APP: 21.38 / 26.00 m
- Deck space (L × W): 150.00 × 50.00 m
- Deadweight: 40,910 t
The ship’s semi-submersible design enables float-on/float-off operations for ultra-large cargoes such as monopiles, jackets, and floating foundations — making it a critical link in the transatlantic offshore wind supply chain.
