The OSS Jasmund project has reached a key logistical step as its topside and jacket completed load-out operations and moved onto barges for their upcoming transport to the Baltic Sea.
At HSM Offshore Energy’s Stormpolder yard, the topside—48m long, 33m wide, 17.5m high, and weighing roughly 4,500 tons—was prepared first. The 72m-high jacket, delivered by Smulders in Vlissingen, followed in a separate operation.

Both structures required tightly managed procedures to ensure safe transfer. A tailor-made grillage developed for the project supported structural integrity and balanced loads during the shift from yard to barge.

The HSI consortium, formed by HSM Offshore Energy, Smulders, and Iv, is delivering the OSS Jasmund for 50Hertz Transmission GmbH under the full EPCIC scope. OSS Jasmund is the first of three offshore substations that the consortium is developing for 50Hertz as part of Europe’s expanding offshore wind program.