Construction contract signed for the first line of the TurkStream offshore section

8 December 2016

South Stream Transport B.V. signed a contract with Allseas Group today to lay the first line of the TurkStream offshore gas pipeline, with an option for laying the second line.

According to the contract, Allseas is to lay more than 930 kilometers of pipes on the seabed. The company will engage the world’s largest construction vessel, the Pioneering Spirit, for the job. The newly completed vessel is especially equipped for offshore pipe laying, with six welding and coating facilities on board.

Allseas will start laying the first line in the second half of 2017.


The TurkStream Project will provide reliable energy supplies for Turkey and south-east Europe, by providing a direct connection to the large reserves of natural gas in Russia. It will consist of an offshore section through the Black Sea and two onshore pipelines to transport the gas to the Turkish grid and other European markets.

The TurkStream Offshore Pipeline will consist of two parallel pipelines running through over 930 kilometres across the Black Sea at a maximum depth of 2200 metres. The pipelines will start near Anapa, on the Russian coast, and come ashore on the Turkish coast some 100 kilometers west of Istanbul, near the village of Kiyikoy. Each offshore pipeline will have a transport capacity of 15.75 bcm per year. The TurkStream Offshore Pipeline is being implemented by South Stream Transport B.V., an Amsterdam-based subsidiary of Gazprom.

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