Around 200 kilometres off the coast of Dampier in northwest Australia, Boskalis safely completed a special operation. At a record depth of 600 metres, the Boka Tiamat undertook excavation works at the continental slope: the steep zone where the seabed transitions from the continental shelf to the deep sea.
The Boka Tiamat was equipped with a specially developed grab for this purpose. Supported by a remotely operated vehicle (ROV), part of the steep slope was flattened to enable the future installation of a pipeline.
Never before had Boskalis executed excavation work at such depths. The Boka Tiamat had just set this “record” when it took on its next deepsea assignment: installing ten 17-tonne concrete mattresses at a depth of 1000 metres supported by an ROV. These mattresses serve as a steppingstone for the future pipeline, allowing it to safely cross the existing infrastructure on the seabed.
Picture (top): The Boka Tiamat (photo Boskalis).
