Half of TurkStream offshore section installed

6 March 2018

On 6 March, 50% of the offshore section for the TurkStream Offshore Gas Pipeline has been installed. As of today, over 930 kilometer of pipeline has been laid in total on the seabed of the Black Sea, divided over two strings. Pioneering Spirit, the vessel responsible for the deep-water sections of the pipeline, passed kilometer point 706 this morning for the first line. For the second line, 224 kilometers were installed in 2017.

Construction of the offshore section started on 7 May 2017 by Alseas’ vessel Audacia. On 23 June 2017, Pioneering Spirit took over to install the deep-water section. Pioneering Spirit has been working on the project continuously since then.


The TurkStream Offshore Gas Pipeline will consist of two parallel gas pipelines stretching for 930 kilometres across the Black Sea, each with a diameter of 81 centimetres and an annual throughput capacity of 15.75 billion cubic meters. TurkStream will be the first pipeline of its size to be installed at a water depth of up to 2,200 metres. One of the pipelines will cater for the Turkish market, while the other will stretch to the Turkish-European border to ensure reliable deliveries of Russian gas to south and south-east Europe.

In line with the schedule, first gas is expected to flow through TurkStream by the end of 2019. The TurkStream Offshore Pipeline is constructed by South Stream Transport B.V., a 100% subsidiary of Gazprom.

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