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Wind Turbine Install

Hollandse Kust Zuid Wind Farm






Offshore Wind



2200 mT LiftLOK

Connector No.



2500 mT shackle


Holland, Kust Zuid

Earth Globe Map World Dots Blue Netherlands 001

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Wind Turbine Install

In 2020, we were approached by Seaway 7 to design, manufacture and test a quick connecting tool for a heavy lift vessel crane operating in Hollandse Kust Zuid 1-4. 

The product had to withstand a Safe Working Load (SWL) of 2200 mT, and interface with a 2500 mT shackle.

Supplied with the system were five common receptacles for use with an impact hammer and pile upending tool.

The LiftLOK Quick Connector produced has since been successfully deployed for multiple offshore wind farm projects.

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Design and specifications


4 x 2200 mT LiftLOK

Lifting capacity

2200 mT

Components to be lifted

Impact hammer and pile upending tool

Special features

Remotely control for full operation

Multiple interfaces

Digital installation guidance camera control system

Long under load time

Rapid size adaption


We created a unique design based on ball and groove technology, providing a compact and robust tool.

This design allowed the connector to withstand the rigorous task of being connected to the impact hammer during the piling operations.

The digital installation guidance system incorporated allows for remote viewing and operation using a camera, aiding installation and reducing the risk of errors. The connector was designed and certified in accordance with DNV-ST-0378.


The manufacturing process adhered to strict quality control measures to ensure that the connector met the required standards and specifications.

We sourced materials complying with DNV grade NV F800A from European suppliers and machined them in the UK.

The connector was assembled and tested at our facility in the UK utilising the in-house 4000 mT test rig.


The LiftLOK was deployed by Seaway 7 for the upending and installation of monopiles in the Hollandse Kust Zuid (HKZ) 1-4 Wind Farm, the largest offshore windfarm in the Netherlands and, at the time, the world.

Highlighting its success and durability is the 140+ installations that have been carried out.

Current location

The system’s success has led to its redeployment for use on the Dogger Bank Wind Farm project, currently the world’s largest offshore wind farm.

Multiple Tier 1 contractors have selected this system as a quick connection between heavy lift cranes and various types of equipment and hardware.

The remote operation and digital installation guidance system have improved efficiency and reduced installation errors, ensuring the safe and effective deployment of offshore wind farms.

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