Sea Fastening &
Support Structures
Precision machining of sea fastenings and tower stands before installation.
Support Structures & Flange Solutions
Sea Fastening &
Trusted by wind operators and OEMs across Europe and North America
- Vestas
- Siemens Energy
- NextEra Energy
- GE Vernova
- Enercon
- Nordex
- EDF Renewables
- Welcon
- RWE
- CS Wind
- EEW
- Muehlhan
- Nicon Industries
- Orsted
- Cadeler
- Vattenfall
- Smulders
- Windar
- Titan Wind
- SubC Partner
- Semco Maritime
- LM Wind Power
- Iberdrola
How It Works Precision Machining
Precision Machining
For Critical Support Structures.
We machine sea fastenings, tower stands and transport frames directly where the structures are located - at the fabrication facility, the shipping port, or on the installation vessel. No transport to a workshop. No unnecessary handling. Precise, repeatable results across large support structures.
Machining the interface, not moving the structure
Sea fastenings secure wind turbine components on installation vessels. Tower stands and transport frames hold towers, nacelles and other components at fabrication facilities and shipping ports before installation. For tower and nacelle applications, these interfaces often consist of large flange connections that must meet precise tolerance requirements - essential for efficient assembly and reliable positioning of the supported component. Using Goliath and our mobile machining systems, we mill and resurface these flanges and mounting surfaces on the structure itself.
Built around the project, not the workshop
- Works throughout the project lifecycle - from fabrication and production facilities to shipping ports and installation vessels
- Surface flatness machined to customer specification
- Typically 1-4 days on site
Why it beats workshop machining
Moving a large support structure to a workshop means extra transportation and handling. Machining on location removes that step - reducing rework, avoiding additional handling and keeping projects moving according to schedule, with controlled quality at fine tolerances. We have delivered on-site machining on five continents.
Technical Specifications
Typical duration 1–4 days on site
Surface flatness Customer specification
Machining type Milling & resurfacing
Certification ISO 9001
Equipment Mobile CNC milling system
Applications Sea fastening structures
Expected lifetime Similar to original
ISO 9001PORT MACHININGHEAVY STRUCTURESCNC CONTROLLED
On Site Machining We perform precision machining directly where the structure is located, eliminating unnecessary transportation and handling.
Precision Machining Machining solution to meet the required tolerances, ensuring efficient assembly and reliable interfaces between support structures and wind turbine components.
Project Efficiency By machining sea fastenings and supporting structures we reduce rework, avoid additional handling, and keep projects moving according to schedule.
Cost Efficient Machining By bringing precision machining directly to the structure, we eliminate unnecessary transportation and reduce the costs associated with handling large support structures.
Contact our team Need Precision Machining
Need Precision Machining
For A Supporting Structure?
From production facilities and shipping ports to installation vessels, we help customers solve complex machining challenges across the wind industry.
Request received.
An engineer will get back to you within one working day.
Global reach
Wherever your turbines stand
On site within days Worldwide call-out, 24/7. Technicians mobilize within days of a purchase order.
Onshore & offshore The same in-nacelle method works at sea - no offshore crane deployment needed.
Five continents A proven repair track record on wind turbines across five continents.
FAQ
Frequently asked questions
What is sea fastening on a wind installation vessel?
Sea fastening is a steel structure used to secure wind turbine components on installation vessels. Similar support structures - tower stands and transport frames - are used at fabrication facilities and shipping ports, where towers, nacelles and other components are stored before installation. They serve as critical interfaces between the support structure and the component itself.
Can sea fastenings be machined without transporting them to a workshop?
Yes. Using Goliath and mobile CNC machining systems, the flanges and mounting surfaces are machined directly where the structure is located - at the fabrication facility, the shipping port, or on the installation vessel. This eliminates unnecessary handling and transportation of large support structures.
How long does on-site machining of a sea fastening take?
A typical job takes 1 to 4 days on site.
What tolerances can be achieved when machining support structure flanges?
Surface flatness is machined to the customer's specification. For tower and nacelle applications, the interfaces often consist of large flange connections that must meet precise tolerance requirements, which is essential for efficient assembly and reliable positioning of the supported component. The work is milling and resurfacing performed under ISO 9001 certification.
Which support structures can be machined on site?
Sea fastening systems, tower stands and transport frames - throughout the project lifecycle, from fabrication and production facilities to shipping ports and installation vessels. The machining covers flanges and mounting surfaces on the structures.
