Jan De Nul Group keeps on investing. This time, two 6,000 ton Subsea Rock Installation vessels have been ordered at AVIC Weihai shipyard in Weihai, China.
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 and Oil & Gas platforms. 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.
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, specialized personnel and client representatives. The vessel complies with the IMO Code for Special Purpose Ships.
The two sister vessels will be delivered in 2017.
About Jan De Nul Group
Jan De Nul Group offers specialized services for the installation of subsea structures (pipelines, cables, umbilicals, foundations or platforms) for oil, gas and renewable energy industries. They comprise cable and umbilical installation, seabed preparation, trenching, stabilization and ballasting. These types of services can be offered on an EPC basis tailor-made to the client’s specific wishes.
VESSELS’ TECHNICAL DATA
Deadweight 6,200 ton
Length o.a. 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 ton
Inside outer basket diameter 16.8 m
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.
