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Jumbo secures Malaysian pipelay contract

Jumbo secures Malaysian pipelay contract
Jumbo has secured a contract from Sigur Ros, a Malaysian pipelaying firm, to transport and install 126 gravity anchor assemblies at the start of next year.

The work, the value of  which was undisclosed, will be undertaken in water depths of up to 1,400m by Heavy Lift Vessel HLV Fairplayer. The anchor spreads, which will consist of a 230 tonne gravity anchor, tether wire and subsea buoy will be used to moor a pipeline with a 1,600 mm diameter, running 80 km from Turkey to Northern Cyprus. The pipeline, in spans of approximately 500 m, will be suspended, floating at a depth of approximately 250 m.

The tether ropes, 116 mm in diameter, will be cut to varying lengths to match water depths along the pipeline’s route, up to 1,400 m. Towards the tops of the tether wires the subsea buoys, 8m in length, 3m in diameter and weighing 17 tonnes each, will be positioned to moor the pipeline.

While Fairplayer’s DP2 system keeps the vessel in place, the anchor spreads will be lowered into position using the vessel’s 900 tonnes mast cranes, one of which will oversee the deployment of the buoy and tensioning of the tether wire, while the other lowers the anchor. Some 14 km of crane wire will be applied to the winch, which can carry out installations to water depths of up to 3,000 m.

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