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Successful Factory Acceptance Test

Last week Red Rock successfully tested the first auxiliary crane in a series of three for Jan De Nul’s next generation offshore installation vessel Les Alizés.
The FAT was done over two days with representatives both from Jan De Nul and Bureau Veritas.

The crane will now disassembled from the test stand and prepared for transport. The next steps are installation and commissioning onboard the Les Alizés.

Overload test of 45T

The crane is custom designed for this vessel with a short main jib and telescopic function on the knuckle jib. In parked position the footprint of the crane is minimal and there will be more available deck space onboard for mission equipment for offshore wind.
The crane SWL is 40T and the maximum reach is 30 meters. Crane is equipped with Personnel Lift, Constant Tension and Active Heave Compensation.


Together with the Jan De Nul’s Voltaire, this new vessel will be in a super-size class of its own, capable of building the newest generation of offshore wind farms. Les Alizés, that will be ready in 2023, is equipped with highly advanced cranes to support the operation of the vessel.



Please contact the Red Rock sales team for further information:

Thomas Holte
Mobile: +47 99 63 52 62

Bjørn Mossestad
Mobile: +47 46 84 34 09