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18.03.2024

In the Bay of Bothnia there is fast ice in the archipelagos, up to 70 cm thick in the north and up to 50 cm thick in the south. At sea in the north, there is mostly 30–70 cm thick, very close, ridged and rafted ice that is difficult to force at places. Further south there is very open ice. In the Quark there is up to 50 cm thick fast ice at the coasts and at sea there is 10-50cm thick, open ice and in in the west 10–50 cm thick, close ice. At the coasts of the Sea of Bothnia there is fast ice, up to 55cm thick in the east and up to 30 cm thick in the west. Level ice or fast ice is present in the Archipelago Sea. There is up to 55 cm thick fast ice at the eastern and northern coast of the Gulf of Finland. At sea in the more northern part there is 5-35cm thick, very open to very close ice. In the northeastern Gulf of Riga there is up to 40 cm thick fast ice at the coast with close ice in places along the coast. Else thin ice is present at places, but also up to 30cm thick fast ice, in the Mälaren, Vänern, and some Norwegian fjords.

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Bundesamt für Seeschifffahrt und Hydrographie (BSH)