Van Oord contributes to the growth of the port of Rotterdam. The Port of Rotterdam Authority has awarded the construction of some 2.4 kilometres of quays and earth-retaining walls in the Princess Amalia Harbour to the HOCHTIEF, Ballast Nedam and Van Oord consortium. With this, the Port Authority invests in major expansion of container throughput in Rotterdam. The construction of the quays marks the start of the further development of the harbour located on Maasvlakte II. The development will increase annual throughput capacity in the port of Rotterdam by four million standard containers. The new building work will be on either side of the harbour, which is approximately 2.5 kilometres long. In total, this includes 1,825 metres of deep-sea quay, 160 metres of inland shipping quay and 360 metres of earth-retaining walls. Barring 725 metres, this means that the entire harbour basin, which went into use in 2015, will be enclosed. The project also includes the construction of a 160-metre waiting area for general use by inland shipping vessels. The completion of the first 500 metres of quay wall is expected in late 2022. The final part of the project will be completed no more than eighteen months later. In addition to the construction of the quays, which will have a retaining height of 29 metres, the work also involves dredging the quays to a depth of more than 20 metres below sea level. In order to accommodate the future container cranes, a rear crane track of approximately 1.8 kilometres will be constructed on piles. The quays will be state-of-the-art. For example, they are equipped with a wide range of sensors to monitor forces and any deformations. In addition, ECOncrete blocks will be installed at two locations. These act as artificial reefs to stimulate underwater biodiversity.