Source: Nord Stream
The pipelay vessel Castoro Sei arrived in the Finnish Exclusive Economic Zone (EEZ) on schedule and continued construction of the Nord Stream Pipeline moving from the Swedish EEZ to the Finnish EEZ yesterday.
The first short section of the construction of the 375-kilometer-long Finnish part of the Nord Stream Pipeline will be laid during the summer. The majority of the Finnish section will be constructed during late autumn and winter 2010, after completion of the Russian landfall.
So far, approximately 175 kilometers of the first pipeline has been installed, starting in the Swedish EEZ off Gotland.
Two Vessels Will Be Used for Pipe Laying in the Finnish EEZ
Saipem’s anchored Castoro Sei vessel will be performing the pipe laying during summer and early autumn only in the westernmost part of the Gulf of Finland, starting from east to west between kilometre points (KP) 498-350 (counting of KPs starts at the Russian landfall in Portovaya Bay at KP 0 and ends in Lubmin at the German landfall at KP 1,224). Castoro Sei will lay approximately 20 kilometres of the pipeline in the Finnish EEZ during the summer. She will transit to Russian waters to construct the landfall, and return to the Finnish EEZ again early autumn.
The majority of route in the Gulf of Finland, approximately 230 kilometres of the pipeline between KP 123-350 will be laid in late autumn and winter 2010, starting from the direction of the Russian-Finnish EEZ border with the Allseas’ dynamically positioned (no anchoring) vessel Solitaire. This way it is possible to minimize impacts to other marine traffic in the congested Gulf of Finland. The pipeline sections laid from the opposite directions will be welded together on the seabed at KP 297.
The pipelay vessels will be supplied continuously with concrete weight coated steel pipes, each about 12-metres long and weighing about 23 tonnes. While operating in the Gulf of Finland, the pipes will be shipped to the vessels from Kotka and Hanko, Finland.