Jan De Nul orders two new vessels

Monday, 11 May, 2015 - 09:45
Jan De Nul has ordered two new rock installation vessels. (Graphic: Jan De Nul)
Jan De Nul has ordered two new rock installation vessels. (Graphic: Jan De Nul)

Jan De Nul Group keeps on investing. The company has ordered two 6,000 ton subsea rock installation vessels at Chinese AVIC Weihai Shipyard.

The vessels will be able to install rock at depths up to about 600 m by means of a flexible fall pipe. An inclined fall pipe will enable accurate rock installation around structures such as offshore wind turbine foundations. The vessels will also act as a support vessel for a subsea trencher, for the burial of cables. In addition, a cable carrousel with related equipment can be installed on board, for placing cables on the seabed. In the cable laying mode, the vessel can be equipped with a carrousel or with cable reels along with tensioners, chute and auxiliary equipment. An A-frame and ROV trencher can be deployed from the vessel for burial of the installed cables.

To enable these functions, the diesel-electric vessel is provided with a DP2 system. An accommodation for 60 persons, all in single cabins, offers comfortable living space for the crew, specialised personnel and client representatives. The vessel complies with the IMO Code for Special Purpose Ships.

The two sister vessels will be delivered in 2017.

Katharina Garus / Jan De Nul

Technical data of the vessels

Deadweight 6,200 tons
Length 96 m
Breadth 22.0 m
Draught loaded 6.5 m
Dynamic positioning DP2
Propulsion power 2 x 1,250 kW
Bow thruster power 2 x 1,250 kW
Total installed diesel power 6,800 kW
Speed 11.5 kn
Accommodation 60

Turntable specifications

Capacity 4,000 tons
Inside outer basket diameter 16.8 m

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