Offshore engineering firm Sembmarine SLP has collaborated with heavy-lift specialist ALE to complete jack-up operations for a 954-tonne jacket as part of construction of Dudgeon Offshore Wind Farm in the UK.

Projects teams from both firms oversaw all lifting procedures and utilized the ALE’s Mega Jack 800 system to lift the jacket to the required height of 14 meters along with ALE’s AK912 and the LR1600-2 crane systems.

“Using our innovative equipment in this way shows how ALE continues to push the boundaries in not only the offshore wind market but also engineering capabilities in the UK,” said Vytis Zygialis, ALE project engineer.

The firms performed multiple site moves, upending and jacking-up as well as loading-out the jacket and topside at the fabrication site in Lowestoft, Suffolk.

“It has been a particularly complex operation to integrate the suction bucket technology into the jacket whilst also considering the construction constraints of the project. The roll-up event was a culmination of high level engineering and design works carried out by SLP and ALE and close collaborative working with STDL to get the jacket ready for planned sail away in May,” said SLP Project Manager Matthew Wooltorton.

Photo: ALE completed operations using the MegaJack 800. Credit: ALE


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