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Cleanup petroleum harbor, Amsterdam

The Amsterdam Petroleum harbor on the North Sea Canal has been used for the storage and transshipment of oil products since its construction in 1887. Over many years routine operations and unchecked discharges resulted in severe contamination of the harbor.

In 2004 the Department of Public Works of the Province of Noord-Holland awarded a contract to clean up the harbor to Combinatie Sanering Petroleumhaven, a consortium of Boskalis Dolman and Vries & van de Wiel. Extensive tests were conducted prior to proceeding with the remediation of the harbor slopes and the flat bed of the harbor. To determine the thickness and quality of the layer of sediment on the harbor slopes, samples were taken using an instrument we developed specifically for the purpose. In all we removed around 167,000 m3 of dredged sediment. The most heavily polluted sediments, with levels of pollution of up to 200 grams of oil per kilogram of dry matter, came from the north-eastern section of the harbor. These were taken to 't Oost depot in Den Helder for drying and ripening, after which they were conveyed to a thermal cleaner for further processing.

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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.