Global heavy lift industry is pushing the limits on a daily basis in handling larger components for offshore energy projects, increasing lifting capacities in tons and reach. Beyond fragmented supply chains, tightening workforces and waves of new regulations, heavy rigging project owners and operators must manage existing cost pressures and demands for moving, lifting and installing increasingly larger and heavier structures and shorter project windows– both onshore and offshore.

Selecting the right rigging can help you meet these demands without sacrificing safety nor productivity. Read on to discover how slings made with Dyneema® SK78 provide the best support for your project and business requirements.

The slings made with Dyneema® provide the strength, level of control and reliability we need when lifting and positioning transition pieces onto monopiles in the Yunlin Offshore Wind Farm

Jochem Tacx, Project Manager at Jumbo Maritime

Our application specialists can support your delivery of robust, reliable and certified heavy lifting solutions.

Dyneema® SK78 is the best building block for your next heavy lifting project. Here’s why.

Protecting payloads and ensuring job site safety

Safety of people and cargo is always top priority. Slings with Dyneema® SK78 are light, flexible and compact for easy handling, and offer long lasting strength and performance that ensures the safest and most reliable operations. Even in challenging operational conditions that include dynamic loading, abrasive surfaces and sharp edges.

What makes slings made with Dyneema® SK78 safer and more reliable to use?

Dyneema® SK78 fiber is renowned for its quality, assured performance and durability. This has resulted in an Approval of Manufacturing Certificate by DNV, and Type Approvals by Bureau Veritas and ABS. It is also designed have improved fatigue lifetime. To ensure the highest reliability during your lifting jobs Avient has developed tools that accurately predict sling performance in a number of environments. 

What is the difference between ‘Verification’ and ‘Certification’?

In today’s lifting world slings are predominantly supplied after the break strength, proof load and/or dimensional requirements have been verified by an independent third party. The result is a Verification Statement, solely confirming that this party has witnessed these aspects of new slings at the moment of supply. Such ‘Verification’ does not provide information whether the slings are fit-for-purpose, nor its reliability in terms of holding capacity over time and its useful service life.

That is what ‘Certification’ adds. Certification, according to DNV-OS-E303, implies that the full production process comprising manufacture, testing, assembly and commissioning of the fiber and the slings has been reviewed and found to comply with validated requirements for the application and the intended purpose.

It is thus a much more robust process compared to ‘Verification’, enabling prolonged and sustainable use of the slings in a safe and reliable way. All based acceptance criteria, failure modes analyses and risk assessments on a system level. This is the only process leading to a real ‘Certificate’. The use and value of the DNV Approval of Manufacturing Certificate for Dyneema® SK78 supports such safety and reliability best.

Therefore Avient recommends sling ‘Certification’ over ‘Verification’; enabling safer, more reliable and more sustainable sling design and use.

Avient’s SK78 fiber has a DNV GL Approval of Manufacturer Certificate. What does this represent?

DNV’s Approval of Manufacturer (AoM) Certificate confirms that we have complied with international standards, regulations and recognized DNV rules. This proves our products are of high quality and meet the highest safety standards. 

Such certification is supportive to DNVGL-OS-E303, meaning that the full production process, comprising manufacture, testing, assembly and commissioning, has been reviewed and found to comply with validated requirements and makes these slings fit for the intended purpose.

A certified sling is based on an AoM-certified yarn which is important in ensuring greater reliability, durability and extended service life. This further contributes to reduced sling maintenance costs, repairs, logistics and replacement.

Avient’s Approval of Manufacturing Certificates can be freely downloaded on DNV’s Approval Finder portal or requested via one of our experts.

break strength

Purchasing more than just a break strength

Heavy lifting slings need to be safe and reliable in all kinds of environments and fit for the intended purpose. So, it’s important that they are designed considering system and operational requirements and tested thoroughly to ensure they are up to the task.

Break strength is of course an important consideration, but that is simply the first step. From life-long tension fatigue, to temperature performance, from static to dynamic loading, we put Dyneema® SK78 fiber through rigorous testing to make sure your people and cargo stay safe, and they can reliably work at their full capacity longer and in all possible scenarios.

What tools are used to design a sling made with Dyneema® SK78?

Slings are the vital link between a high-value crane and load, so they need to be fit for their intended purpose. With Avient’s Performance Model, the fatigue lifetime of a sling made with Dyneema® SK78 can be determined based on both static and dynamic loading conditions in any climate. These tools also help in reducing project costs.

How do slings made with Dyneema® SK78 compare to generic HMPE alternatives on tension fatigue?

Avient has engineered Dyneema® SK78 fiber in such way that it offers at least twice the fatigue performance of generic HMPE fibers. At fiber and at sling level. The rope temperature and fatigue models developed by Avient allow for accurate prediction of rope core temperatures in static and dynamic conditions, as well as fatigue life.

What temperature conditions can Dyneema® SK78 withstand? 

Dyneema® SK78 fiber is scientifically proven to perform very well from -40°C to 70°C, while short-term exposure up to 100°C will not cause any serious loss in performance. This is well within the operating temperatures of heavy lifting slings. Dyneema® fiber will withstand sub-ambient temperatures down to cryogenic conditions.

Sustainable manufacturing with the lowest carbon footprint

Reducing our environmental impact is a goal we share and can achieve together. Dyneema® enables you to future-proof your business and contribute towards a sustainable, circular economy. Not only is Dyneema® fiber produced with the lowest carbon footprint by using renewable energy, it is also the world’s first bio-based HMPE fiber with the same superior performance, strength, reliability, and specifications as Dyneema® SK78, and supplied with ISCC certificate.

Compared to generic HMPE fibers bio-based Dyneema® emits 29 tonnes less CO2 per metric ton of fiber produced.

Recently, Heerema Marine Contractors selected ISCC certified bio-based Dyneema® fiber as the material of choice for their lifting slings. The lifting slings were used to transport and install 111 turbine foundations and 2 large offshore substations for a large offshore wind farm project.

What is bio-based Dyneema® fiber?

Bio-based Dyneema® fiber is the world’s first bio-based HMPE fiber that uses renewable/bio-based feedstock.

The mass balanced, bio-based product will use renewable resources, such as residues from the sustainable wood/pulp industry. ISCC certified, bio-based Dyneema® fiber will help our partners and customers reduce their carbon footprint and contribute to the circular economy, while continuing to rely on the same trusted performance of the world’s strongest fiber™. Learn more about bio-based Dyneema® fiber.

Beyond manufacturing methods and bio-based feedstock, what else makes Dyneema® SK78 the greener choice? 

Dyneema® SK78 and Avient’s Performance Models help to provide the required backup to extend the service life of your heavy lifting slings, turning them from a ‘consumable’ into a truly sustainable asset.

carbon footprint
offshore wind

Sustainable Rigging for Offshore Wind

Sustainable rigging prioritizes local content, minimizes carbon footprint and leverages proven durable materials.

Download our latest infographic to learn how Dyneema® SK78 is spearheading sustainable rigging practices within the budding US offshore wind industry. 


Ensuring safety and increasing efficiency with slings and chains made with Dyneema® SK78, from production and transportation of monopiles to installation of wind farms

For one of Taiwan’s largest multi-megawatt offshore windfarms, the Yunlin project, mega monopile manufacturer Steelwind (Nordenham, Germany) chose slings made with Dyneema® SK78 to perform a challenging multi-lifting set of 2,000-tonne lifts. On the Quay of Nordenham, Jumbo Maritime crane-lifted the gigantic monopiles using Extreema® round slings manufactured by Lift-Tex onto ships for transportation in challenging and changeable weather conditions throughout the year.

“For this kind of demanding lifting operation, I wouldn’t recommend using anything other than Dyneema® SK78."

Patrick van der Veen, Operations Manager at Lift-Tex Industrie B.V.

wind farms
people voyage

Each voyage from Nordenham to Taiwan took approximately six weeks. The port crew needed to ensure that the 90m-tall, 11m-diameter cylinders are secured safely and reliably for the long journey ahead, where they would face rough seas, extreme temperatures and hash weather.

The monopiles’ journey from factory to installation comes with a potential threat to the project and to crew safety, from damage to the cargo, to missing narrow operating windows. With safety above all, Jumbo Maritime worked with Dolezych, producer of load security products, for the best solutions. The result was the DoNova PowerLash® chain made with Dyneema® – a lightweight synthetic chain, with the strength of steel but softer and with improved ergonomics for easier handling and more flexible operations.

“The partnership between Dolezych and Jumbo started with a challenging request from Jumbo; to improve its current lashing systems by making them lighter and easier to handle. It also wanted the systems to have a greater flexibility in daily operation.”

Walter Eckstein, Sales Director for Load Security Products at Dolezych

Located in the Taiwan Strait, some eight kilometres west of the coast of Yunlin County, the Yunlin offshore wind farm will cover an overall area of approximately 90 square kilometres. Jumbo chose Lanko®Force slings for the lifting and installation of 80 transition pieces from the “Jumbo Javelin” onto monopiles.

Lankhorst Ropes’ Lanko®Force endless spliced sling made with Dyneema® SK78 fiber have a tight length accuracy needed for the job. They were fitted to a lifting tool used to aid the correct positioning of the transition pieces weighing 450 tonnes.

“The Lankhorst slings provide the strength and level of control we need when lifting and positioning the transition pieces. Moreover, they are easy to handle and maintenance free."

Jochem Tacx, Project Manager at Jumbo

The Lankhorst slings

A perfectly executed duo-trial lift of 5000mT by Scaldis made possible with Bexco’s Utraline slings made with Dyneema®

Bexco’s Ultraline slings made with Dyneema® were used by Scaldis to lift a 5000mT test load pontoon in a remarkable duo-lift with HLV’s’ vessels Guliver and Rambiz. In preparation for the Hinkley Point C project, Scaldis conducted a successfully tandem trial lift as a means to confirm the feasibility and improve the process of the complicated duo-lifts for the intake head installations in challenging environmental conditions.

More Customer Success Stories

Read how lightweight slings with Dyneema® save time and money in heavy lift operations while providing safe, reliable, and durable in the most demanding lifting operations.


“Mammoet’s ability to install, complete modules meant there was no need to move the ship’s hull for final construction.”


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Allseas Group

“The use of slings made with Dyneema® is a proven technology for Allseas. The lightweight specifications of the slings allowed for a relatively compact design of the winch solution. This allowed for smaller winches in the forecastles of the bows of the Pioneering Spirit.”

Zylvester Nocua, R&D Engineer, Allseas Group

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“In the case of jacket relocations, the weight reduction means that we save at least 45 minutes on each lifting operation .”

Peter Blazejewicz, Manager Lift & Transport Engineering, LPO

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Load more customer success stories

Steelwind Nordenham and Lift-Tex

“For this kind of demanding lifting operation, I wouldn’t recommend using anything other than Dyneema® SK78.”

Patrick van der Veen, Operations Manager, Lift-Tex Industrie B.V.

Read more

Patented and Certified

Our models and systems are certified by DNV and in Type Approvals by Bureau Veritas and ABS.

If you want to know more about our certifications, please contact us.


We are ready to support your next project. Get in touch with us.

Lifting slings with Dyneema® SK78. Lightweight, certified, trusted.