Simplified ice chart and reference charts

Normal situation Previous ice map Ice map of the previous year Icebreakers

Ice map of the previous year

FINNISH ICE REPORT 18.02.2019

The ice is moving northward.

In the northern Bay of Bothnia 40-55 cm thick fast ice in the archipelago. Off the fast ice 10-25 cm thick very close ice approximately to the line Malören - Nahkiainen. The ice field is in places ridged. Farther out 20-40 cm thick, in places rafted, very close ice. Cracks in the ice field.

In the southern Bay of Bothnia 20-40 cm thick fast ice in the archipelago. Farther out 10-30 cm thick close and very close ice.

In the Quark 5-20 cm thick open and very open ice and new ice. In the Vaasa archipelago 20-35 cm thick fast ice to Ensten, 10-25 cm thick very close ice to Vaasa lighthouse.

In the Sea of Bothnia 20-30 cm thick fast ice in the archipelago. At the fast ice edge thin very close ice.

In the Archipelago Sea 10-20 cm thick fast ice and thin level ice in the inner archipelago. Along larger fairways very open ice or open water.

In the western Gulf of Finland 10-30 cm thick fast ice and thin level ice in the archipelago.

In the eastern Gulf of Finland 10-30 cm thick fast ice in the inner archipelago. Farther out very open ice to the line Eestiluoto-Tainio-Gogland.

Icebreakers: Otso, Kontio, Polaris and Sisu assist in the Bay of Bothnia. Zeus assists in the Quark and in the northern Sea of Bothnia. Urho assists in the eastern Gulf of Finland.

Assistance restrictions: Minimum ice class and deadweight required of assisted vessels:
Tornio, Kemi and Oulu, IA of more than 4000 tons.
Raahe, Kalajoki, Kokkola and Pietarsaari, IA of more than 2000 tons.
Vaasa, Kaskinen and Uusikaupunki, IC of more than 2000 tons.
Kristiinankaupunki, Pori, Rauma, Taalintehdas, Förby, Koverhar, Lappohja, Inkoo, Kantvik, Helsinki and Sköldvik, II of more than 2000 tons.
Loviisa, Mussalo, Kotka and Hamina, IC of more than 2000 tons.

Vessels bound for Gulf of Bothnia ports in which assistance restrictions apply shall, when passing the latitude 60N, report their nationality, name, port of destination, ETA and speed to ICE INFO on VHF channel 78. This report can also be given directly by phone +46 10 492 7600.

Vessels bound for ports in the Bay of Bothnia shall report to Bothnia VTS 20 nautical miles before Nordvalen lighthouse on VHF channel 67.

The traffic separation scheme in the Quark is temporarily out of use.

About the charts

The ice chart of the whole Baltic Sea (pdf) is published in the autumn twice a week (Monday and Thursday) and daily when the amount of ice increases until until ice break-up in spring. It represents current ice situation, ice breaker positions and traffic restrictions in the Baltic Sea.

The simplified charts are updated once a week at the latest on Tuesday morning. The first one represents measured level ice thicknesses, ice coverage and sea surface temperature. The reference charts represent average, 1965 – 1986, ice situation on that day (= normaali), last week´s situation, last year´s situation and the positions of the ice breakers.

Explanation of chart's finnish words

  • jäätä: ice
  • vettä: water
  • haurasta: rotten ice

 

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