 With this knowledge he was able to draw the first somewhat accurate map of the Arctic shores between the Pechora River and the Ob River.In 1878, Finnish explorer Adolf Erik Nordenskiöld on ship "Vega" sailed across the Kara Sea from Gothenburg, along the coast of Siberia, and despite the ice packs, got to 180° longitude by early September.Frozen in for the winter in the Chukchi Sea, Nordenskiöld waited and bartered with the local Chukchi people.