General The Nord Stream Pipeline Project consists of two 48-inch pipelines which run in parallel through the Baltic Sea from Portovaya in the area of Vyborg and St. Petersburg in Russia to Lubmin in the Greifswald region in Germany. The construction of the German landfall of the Nord Stream Pipeline Project comprised the installation of two 48-inch pipelines in a 28 km long trench that is 10 m wide and over 3 m deep. The seabed in the project area consists of different soil types such as sand, silt and marl. As the project was located in a relatively shallow area relatively small dredging units had to be deployed for trench dredging and backfilling the trench. Because of the tight window for execution of the project a large number of units were working simultaneously during

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