According to the data of the international positioning system of sea vessels, the Russian pipe-laying vessel Akademik Chersky, after staying off the coast of Kaliningrad for a month, returned to the Nord Stream-2 gas pipeline area in the exclusive economic zone of Denmark.
It is accompanied by the supply vessels Umka and Errie. Ivan Sidorenko supply vessel is on the roadstead of the German port of Mukran, Interfax reports.
