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Port development, Sevilla

Seville is located 80 km land inwards and it is Spain’s only commercial river port. Access is along the Rio Guadalquivir. The current dimensions and depth of the port impose limitations on the breadth and draughts of the vessels that use it, putting the future of the port at risk. So the Port Authority developed a New Maritime Approach that provides for the deepening and widening of the approaches to the port.

The complete dredging project, amounting to approximately EUR 15 million, started with maintenance dredging in the entrance channel and the removal of the top layer of the construction pit for the future lock down to a depth of about 5.50 m. A trench with a depth of 15.5 m was then dredged for the foundations of the dike round the construction pit. After the completion of the lock, the new entrance channels will be dredged to a depth of 9.10 m downstream and 7.70 m upstream. The dredged material was pumped to fill areas (recintos) around the construction area, sometimes over distances of more than 2000 m. The work was done by Boskalis’ 3,400 kW dieselelectric CSD Para I, a dredger with a maximum working depth of 17.50 m. The ship is equipped with a special cooling system to cope with tropical temperatures, which is ideal for the hot summers in Seville, where temperatures can reach 45oC. Before this dredging work started, the ship was also adapted to comply with the client’s requirements relating to noise reduction.

Related projects

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Construction of
Marker Wadden

Boskalis has been awarded the first phase of the Marker Wadden development in the Netherlands. The project includes the construction of an island with underwater landscaping. The Marker Wadden are natural islands that will be developed in the Markermeer lake in the years to come. They will provide a major boost for the ecological quality of the Markermeer lake. The natural shores of the islands will give fish more opportunities to spawn and feed. As a result, large numbers of birds such as terns and waders will return to the area because there will be more food for them. The construction of the Marker Wadden will transform the map of the Netherlands.

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Outer harbor channel widening, Adelaide.

The Port of Adelaide is the primary port in South Australia, located at Outer Harbor. The port is operated by Flinders Ports Pty Ltd (Flinders Ports) and handles both container and cruise vessels, contributing significantly to the State’s economic activity. Flinders Ports identified the need for an upgrade of the existing infrastructure driven by the emergence of Post Panamax class vessels. To meet this growth the existing channel had to be widened to accommodate vessels with a maximum width of 49 m without operational restrictions. Flinders Ports contracted Boskalis to execute the dredging works.

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Johan Sverdrup, transport.

Samsung Heavy Industries Co., Ltd. is Equinor’s Fabrication and Transport contractor of the Johan Sverdrup project. Boskalis has been awarded by Samsung as transportation contractor for this project.

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IJsseldelta

The IJsseldelta project is part of the national Room for the River program, which comprises over 30 measures aimed at upgrading the flood defenses in the Dutch river areas. The project involves lowering the summer bed of the Lower IJssel river along a length of 7.5 kilometers near the town of Kampen and creating a bypass to the south of Kampen.

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NORDSTREAM II

Allseas Engineering had been awarded with the contract to support partly with construction of the offshore natural gas transmission system comprising two 48” diameter pipelines from Russia to the Baltic through Germany (NPSP2). The installation of the NSP2 pipeline has been performed by Charterers pipelay vessels: Solitaire, Pioneering Spirit and Audacia.

Port expansion, Tuas Mega Port Singapore

Boskalis is part of a consortium that won a contract related to the construction of the Tuas Mega Port in Singapore. After Shanghai, Singapore is not only the world's largest container port, it also handles 50% of global crude oil production and it is the planet's busiest transit port. The port is the economic motor of Singapore, which is constantly struggling with a shortage of land.