Jan De Nul Group has invested in two 6,000-tonne subsea rock installation vessels that have been ordered at AVIC Weihai shipyard in Weihai, China.
The vessels will be able to install rock at depths up to about 600 metres 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 and 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.
The two sister vessels will be delivered in 2017.
