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Semco Maritime
Esbjerg Brygge 30
DK- 6700 Esbjerg

Floating offshore wind substation

The need for an alternative solution

Make offshore substations float!

As deeper ocean sites further from the coastline are being utilized for offshore wind farms, the floating offshore substation (FOSS) becomes an essential component of the industry. While traditional offshore wind farms are installed on the ocean floor, depths greater than approximately 80 meters pose a significant challenge and cost. This is especially concerning considering that between 60-80% of the world's offshore wind energy potential lies in areas with depths greater than 60 meters.

To bring this potential to shore, an alternative solution such as a floating offshore substation is needed.

The key to unlock floating wind

Our proposed design for the floating substation is based on +20 years in the offshore wind industry and in the oil & gas industry.

We are merging ISC Engineering, and our own knowledge gained from delivering more than 20 offshore substations, together with Inocean’s long track record in designing floaters for the oil & gas, and the offshore wind industry.

What makes our proposed design unique is the increased stability of the triangular design. The FOSS concept will be designed with a 400 MW substation but with the possibility of scaling it to fit your requirement.

Unique Design Considerations for FOSS
  • The design of the FOSS draws experience from offshore floating semi-submersible units like Inocean’s INO12 and INO15
  • 3-column semi-submersible design ensures stable equilibrium for safety and security even in adverse weather conditions
  • The 3-column design reduces warping of the topside, lessening fatigue stress on electrical components, and extends the life of the structure while reducing maintenance costs
  • Triangular structure requires less material, reducing fabrication time and easing topside mating operation
  • Provides beneficial mooring loads and lessened sea-bed impact

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EUDP funding for further development has been secured

The funding will solidify the concept as a scaled basin test at Aalborg University is embedded to validate platform and equipment motions. Read more about funding in this press release...

"We expect to be ready to go commercial with FOSS by Q4, 2024..."

Get in touch with Maria or Tommy to learn more about the development of FOSS
Maria Alexandra Balslev Jørgensen

Junior Sales Manager, Renewables

contact information

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg
Denmark