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Port construction and environmental monitoring, Mejillones

Boskalis International B.V. was working as a subcontractor to the Chilean civil contractor Empresa Constructora BELFI SA, which was awarded the contract to construct phase 1 of the New Mega Port Mejillones. This port has been developed in order to ship the copper of the Chilean mining corporation CODELCO.

The new terminal is capable of handling 2 million tonnes of copper cathodes. For that purpose, CODELCO established the holding company Complejo Portuario Mejillones, which sold a concession for 30 years to Compania Portuaria Mejillones, a joint venture between BELFI and maritime agency ULTRAMAR. The works executed by Dragamex consisted of the following:

  • Monitoring the quality of the water 30 days prior to the beginning of the dredging works, including the quantity of suspended solids, the chlorophyll A concentration, the current speed and direction, the water temperature at predetermined points, and the tide, the wind direction and speed continuously.
  • Monitoring the water quality during the dredging process, measuring the same parameters as mentioned in the previous paragraph, however, more frequently. This in order to assure that the sedimentation that came out of the dredging process did not exceed a predetermined surface, and that protected areas did not receive a higher concentration then 400 mg/lt.
  • Dredging and deepening of the harbor turning basin and mooring places. The volume dredged was approx. 1 million m3.

Related projects

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Shell Malikai

Malikai is a deepwater oil discovery in offshore Sabah, Malaysia where Sabah Shell Petroleum Company is the designated Operator. A floating Dry Tree Unit (DTU) will be installed over Malikai field utilizing a Tension Leg Platform (TLP) design that suits the Malikai environment.

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Coastal development, Hondsbossche and
Pettemer Sea Defense

A joint venture of Boskalis Nederland and Van Oord has been commissioned by the Hollands Noorderkwartier water control board to reinforce the Hondsbossche and Pettemer Sea Defense between the villages of Petten and Camperduin on the coast of the Dutch province of Noord-Holland.

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Maintenance dredging, Yangon River

Located close to the city centre on the Yangon River, Yangon Port has been the main port to Myanmar since colonial times. Currently, the port has capacity for vessels of up to 15,000 –20,000 DWT and works are scheduled to increase the port’s capacity for vessels up to 35,000 DWT.

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Port development,
Libreville - Gabon

A new area was constructed in the Port of Libreville for a mineral terminal, dry dock, fishing port, processing facilities and other port activities, such as aggregate processing. This new port development was required to improve and strengthen the logistic capacity for the inland mining industry, to reduce export costs, and thus to increase the competitiveness of mineral exports from Gabon.

Butendiek OWF

Boskalis was contracted by OWP Butendiek GmbH & Co. KG to supply, install and protect (by post-lay burial) the high-voltage inter-array cable at the offshore wind farm of Butendiek. This German wind farm is situated in the German Bight (Nordsea), approx. 35 km west of the island of Sylt. The 33 km2 wind farm consists of 80 wind turbines with a capacity of 3.6 MW each and a total capacity of 288 MW. The inauguration of the wind farm took place on September 8, 2015. It provides renew-able energy to approx. 370,000 households.

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Cleanup sediment treatment, Fox river

As a result of industrialization the riverbed of the Fox River (Wisconsin, USA) had become contaminated with PCBs (polychlorinated biphenyls). Joining together a number of large paper mills based on the banks of the river have established the Fox River Cleanup Group to handle the remediation project. The site is on the federal Superfund program’s National Priorities List.