Sembmarine-built Sleipnir breaks records at the Jotun Field

The new record was for the largest single lift jacket removal.

Sembcorp Marine-built and Heerema Marine Contractors-owned SSCV Sleipnir has set a new record for lifting an 8,100-tonne jacket in a single lift on July 11 at an offshore platform decommissioning project in the Jotun field, located in the Norwegian North Sea, according to an announcement.

The dual-fuel Sleipnir, with its two 10,000-tonne capacity cranes is said to be in high demand for offshore installation and decommissioning jobs since its successful completion last year.

In the Norwegian North Sea, Sleipnir successfully removed the 8100 mT Jotun-B jacket for client Vår Energi. The platform was installed in 1998 by Heerema's Thialf, demonstrating the circularity of Heerema's involvement in the life cycle of these now retiring platforms.

For the jacket removal, Sleipnir arrived at the Jotun Field located 200 km west of Stavanger on 11 July and completed the project by offloading the jacket onto the quayside at the AF Miljøbase decommissioning site in Vats, Norway on 16 July.

With the Jotun-B jacket safely and sustainably transported to Vats, it will end its life cycle by being recycled up to 99%.

During this project, skirt piles with diameters 2.7m and 80mm wall thickness were cut subsea, the largest ever done in this way. Additionally, Heerema fabricated a 40m long spreader bar within 2mm tolerance for a tight fit.

Sleipnir performed the full removal operations while running on emission-reducing LNG fuel thus reducing CO2 emissions by 25%, NOx emissions by 92%, SOx emissions by 99%, and Particulate Materials by <99% compared to traditional marine gas oil crane vessels.

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