As with many similar historic European ports, such as Rotterdam, the bulk of activities has steadily moved downstream towards the open sea, as ships have grown larger and other city uses take up land closer to the city's centre.
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However, closing off this river mouth would be very detrimental for the Dutch economy, as the Port of Rotterdam - one of the biggest sea ports in the world - uses this river mouth.
Beginning in the same period, most of the island was given to industrial enterprise, part of the Port of Rotterdam (Botlek and Europoort).
In addition, in 2006 TAQA acquired BP Nederland Energie B.V. Through this acquisition, TAQA get onshore and off-shore production assets, including the Piek Gas Installatie facility in Alkmaar, the project of the largest offshore LNG Regas facilities utilizing the depleted field P15/P18 just off the port of Rotterdam, and partnership in the Bergermeer gas storage project.