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Port development, Gothenburg

Gothenburg turns around some 34 million tons of cargo annually, including 700,000 TEU (containers), and is unique in the region. With regard to the variety and frequency of calls from intercontinental liner trade the port is outstanding in Sweden. The port can be reached from the sea via two different channels: Torshamnen Fairway and Böttö Fairway. From a navigational point of view both channels needed to be deepened and widened at a number of places. Thus there were two good reasons to enhance the fairways: securing the port’s future as the premier port for liner trade and creating safer navigation. This resulted into a major dredging contract which was awarded in June 2002 to Boskalis Westminster Dredging Company.

The contract called for deepening/widening of the outer part of Torshamnen channel to about 20.5 meter water depth as the Böttö channel and inner part of Torshamnen channel had to be deepened to about 14.2 meter waterdepth. In total this project involved the removal of a gross quantity of 12 million m3 of soft to stiff clay which material had to be dumped into a designated disposal area at sea. Moreover 375,000 m3 of solid rock had to be drilled and blasted. The quantity of one million m3 removed broken rock was partly dumped at sea, partly used for filling works and partly used to create an artificial reef (to stimulate fish life). An uncertain factor was the possible presence of boulder clay on top of the rock. Strict environmental monitoring was part of the contract specifications.

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Cieg GJ1 Cable repair

Channel Islands Electricity Grid, a joint venture between Jersey Electricity and Guernsey Electricity operate several interconnecting power cable systems (power and telecom) between Jersey, Guernsey and France. Both Jersey and Guernsey rely upon the services of these interconnecting power cables and as a consequence there is a demand to reduce the possible effects and impact of failure to these interconnecting power cables. Boskalis were contracted to conduct a preemptive repair replacing a section of cable including the installation two subsea joints on the Guernsey Jersey circuit, close to Havelet bay.

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Construction motorway, A4 Delft-Schiedam

Boskalis Nederland was involved in the construction of the A4 motorway from Delft to Schiedam. The client is Rijkswaterstaat. After 40 years, the construction of this final section will bring to an end the public debate about whether this new road was needed.

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Channel expansion, Suez

The Suez Canal is one of the world’s main shipping links and thus of major importance to world trade. The canal extends from Suez on the Red Sea to Port Said on the Mediterranean. Egypt’s Suez Canal Authority awarded the contract to double the canal’s capacity to a consortium, which was aptly named the Challenge Consortium by the Chairman of the Suez Canal Authority, Admiral Mohab Mamish.

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Onshore co-mining project, Lelydorp

Suralco L.L.C., an indirect joint subsidiary of Alcoa Inc. and Alumina Ltd., has awarded Boskalis a contract for the mining of bauxite in Lelydorp, Suriname. Boskalis is responsible for the entire mining process, from engineering and overburden removal to bauxite mining and ore delivery.

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Port development, Cherbourg

To accommodate an assembly plant for wind turbines, a 220 m quay wall had to be added to the existing quay and two hectares of land behind the new quay had to be reclaimed.

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Dredging and reclamation, Songdo International City

Boskalis has been awarded a contract by Daewoo E&C for the dredging and reclamation of new land for Songdo International City on the waterfront of Incheon, South Korea. The total value of the contract amounts to approximately EUR 80 million.