Bespoke sheave blocks delivered in two weeks, a mission impossible? Not for us!

The sunken Norwegian frigate Helge Ingstad collided with a tanker off the Sture oil terminal on November 8. Despite attempts to keep the Helge Ingstad floating, the vessel ultimately sank near shore. Salvage specialist Scaldis Marine Contractors NV lifted the vessel using a Double Duo Lift method. received a request from Scaldis Marine Contractors NV for design, engineering, fabrication, testing and delivery of two double sheave blocks with a capacity of 900 tons each. At that moment no specific detail of the job were provided besides a hand sketch and the required capacity. A minor detail was the desirable delivery date of maximum 2 weeks, appearing to be an impossible mission.


Double sheave blocks with a capacity of 900 tons each

Sheave blocks were needed to salvage the KNM Helge Ingstad

During the next contacts it became clear that these sheaves blocks would be used as equalizing sheaves in a rigging configuration to salvage the Norwegian KNM Helge Ingstad, a marine frigate that collided with a commercial vessel.


Testing double sheaves blocks

Driven to be a true partner

As recognizes itself as a true service provider in the industry embracing technical challenges it committed themselves to this challenging request, and after two days of intensive communications the work was awarded to A dedicated project team including devoted suppliers and fabricators was assigned, and the design and engineering team pick-up the activities in close cooperation with Scaldis’ project team in Belgium and Norway immediately.

The same day received the order to execute the works, materials could be ordered and engineering works were ongoing at full pace and drawings and calculations were submitted the day after. The next days were a continues carrousel of intensive communications with the client project team, fabricators and suppliers, and only seven days after receipt of the Purchase Order, the sheave blocks were tested under witness of Client and DNV-GL and loaded on the truck for transport to Norway the same day. The impossible was made possible!

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Support for this unique salvage job

After a week received a phone call from the project team again to support with design and fabrication activities for this unique salvage job. During a period of approximately three weeks, continued to support Scaldis’ project team and performed design and engineering services, integrity checks of the hull and fabricated and delivered additional hardware for this high end, engineering based salvage job.

Eric, Project Manager “Of course this challenging project could be realized only with the support and trust of our clients project team, our committed employees, devoted fabricators and suppliers. Therefor we would like to express our appreciation to everybody who was part of this achievement. We are grateful to be surrounded with such devoted personalities and relations who made all of this possible.”


Need bespoke sheave blocks or other equipment fast?

We cover all your needs. Please contact us.

Eric van der Heijden
Project Manager
Phone: 0031 (0)30 2 40 80 60

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What we do

As an independent partner, we advise about, design and construct everything from concept study to project completed. Our in-house developed design software calculates everything concerning mobile cranes and bespoke heavy equipment, while our people offer the expertise and skills that secure your success.


Consultancy / Design & Construction

Our 40 years of experience provides the basis of a successful start of your project: right from the FEED phase. Preparation is vital. Therefore our concept studies, method statements and mission equipment offer you all the support you need.


Consultancy / Design & Construction

Our aim is to optimize your project team’s results. With our exclusive knowledge of lifting and transportation we eliminate and manage risks. This is how we reach our collective goal: Zero Accidents, Zero Incidents.



We have built up a great deal of experience with the design of (mobile) cranes and bespoke heavy equipment such as piling machines and excavators. Our customer base includes the most prominent producers of cranes and heavy machinery worldwide.

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Call +31 (0) 30 240 80 60 or use the contact form. We always respond within 24 hours.

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