Royal IHC Signs Hopper Dredge Contracts

In March, Royal IHC announced two hopper dredge contracts for Van Oord and National Marine Dredging Company.

The contract for Van Oord includes the design and delivery of the complete dredge installation for two new LNG-powered trailing suction hopper dredges from Van Oord. The two 10,500 cubic meter hopper dredges are being built in Singapore.

The order includes two suction pipe installations with integrated submerged dredge pump unit, four additional shore discharge dredge pumps and six jet pumps in total. IHC said the pumps are equipped with the latest Curve® technology. The Curve® impeller, with its innovative shape and blade curvature, ensures that the pumps perform with excellent suction properties over the prolonged lifetime of the product.

In March, Royal IHC also signed a contract with National Marine Dredging Company (NMDC, based in Abu Dhabi, U.A.E.) to build another trailing suction hopper dredge. The new vessel builds the success of the 6,000 cubic meter trailing suction hopper dredge Arzana, which was delivered by IHC in 2018. In addition, IHC will deliver the first hopper dredge simulator to the Middle East, further allowing NMDC to develop and strengthen its in-house dredging capabilities and competencies. The new dredge will have an enlarged hopper capacity of 8,000 cubic meters and a larger dredging depth of 45 meters.

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To complete an extensive oil pipeline dredging and installation project, Murjan Al Sharq Marine Contracting Co. Ltd. (MSMC) took delivery of three Damen vessels: a Stan Tug 1606, a Shoalbuster 2509, and a Stan Pontoon 4512, equipped with a Damen DOP Pump.

MSMC Chairman Abdullah Natheer and General Manager Chris Clark attended the delivery ceremony of the Shoalbuster 2509 at Damen Shipyards Gorinchem. MSMC will be using the three new vessels on an oil pipeline trenching project.

“The overall aim of our client’s project is to improve the efficiency of old wells,” Clark said. “We will be dredging a 5-kilometer trench and installing a new trunk line to tie in wells that have been recently upgraded. After that we have a pipe pull, followed by backfill operations.”

For the first kilometer of the trench, MSMC will use the Multi Cat 1908 Murjan 40 and DOP 250 purchased from Damen in 2017.

The remaining 4 kilometers (2.5 miles) of trench will be dredged by the new Stan Pontoon 4512, supported by the new Stan Tug 1606 (named Murjan 22) and the new Shoalbuster 2509 (named Murjan 41).

A notable aspect of the project is the diversity of conditions that will be encountered. Water depth, for example, ranges from 0 meters at the shore to 7 meters (23 feet) at its deepest point. Furthermore, geotechnical conditions are highly variable.

Damen said any challenges posed by the working environment will be met by the flexibility of the Stan Pontoon 4512, facilitated by a 170-tonne Heila and a 100-tonne Liebherr crane. “We worked closely with Damen’s engineers in the Netherlands and at Albwardy Damen [the construction shipyard] to customise the Pontoon specifically for this job,” Clark said. “For trenching, we can work as a backhoe dredger, or use the DOP in various configurations. And then for backfilling operations we have a mass flow excavator.”

Based in Saudi Arabia, MSMC provides marine construction and maintenance, dredging, diving and subsea services.
For Damen, this marks the successful conclusion of a coordinated construction and delivery contract involving three shipyards in the Netherlands, China and the United Arab Emirates.