The world’s largest floating cranes with a Czech footprint still reign at sea after 10 years

Sviadnov, September 18, 2024 – This year, Huisman Czech Republic is celebrating ten years since the beginning of the production of two of the world’s largest floating cranes, designed and manufactured for the vessel Sleipnir, operated by Heerema Marine Contractors. With a lifting capacity of 2 x 10,000 tons, these giants remain unmatched at sea even after a decade.

Production in Sviadnov – A Czech Footprint in a Global Project

Technicians from Huisman’s Sviadnov plant spent approximately 23,000 hours preparing the manufacturing documentation for these cranes. Their task was not only to design but also to ensure the manufacturability, transportability, and functionality of all components. “Overall, we processed 2,848 items for each crane. It was crucial to ensure that every part fit precisely into the complex structure while being safely transportable,” recalls Robert Muroň, Engineering Manager at Huisman Czech Republic.

Although it was not originally planned, part of the production was eventually moved directly to Sviadnov, where 14 containers for electrical cabinets, parts of the crane arm’s truss structures, and winches were manufactured. “This production involved approximately 1,200 tons of material, with individual structural parts reaching lengths of up to 12 meters,” added Robert Muroň.

Sleipnir Still in Action

Even after years of operation, the Sleipnir vessel remains the largest crane ship in the world, capable of working in the most challenging conditions. Its two cranes, each with a capacity of 10,000 tons, have an operational radius of up to 48 meters and, at maximum lift, reach a height of 210 meters above sea level. The vessel, equipped with these cranes, continues to participate in significant projects, such as the installation of structures for wind farms in the North Sea.