Baltic Sea Ice Conditions Intensify, Straining Icebreaking Resources
Ice coverage in the Baltic Sea is currently exceeding recent averages, prompting increased icebreaking operations across the region. As of early February 2026, approximately 144,000 square kilometers—or 34%—of the Baltic Sea is covered in ice, a level not seen since the 2012-2013 icebreaking season.1
Current Ice Situation
The most significant ice concentrations are located in the Gulf of Bothnia, the Gulf of Finland (between Finland, Estonia, and Russia), and the Gulf of Riga.1 The 2025-2026 icebreaking season began in late November with restrictions in the Bay of Bothnia.1
The current ice extent places the season in the average category, with several weeks remaining before the typical peak. Ice seasons are categorized as follows:
- < 115,000 km²: mild season
- 115,000 km² ≥ average season > 230,000 km²
- 230,000 km² ≥ severe season > 345,000 km ²
- ≥ 345,000 km²: extremely severe season
National Icebreaking Efforts
Finland
Finland’s state-owned icebreaker operator, Arctia, has deployed its fleet, including Otso, Fennica, Polaris, Urho, and Kontio, in the Bay of Bothnia.1 Additional vessels, Zeus, Voima, Sisu, Nordica, and Calypso, are operating in other areas, including the Gulf of Finland and Archipelago Sea.1 A new icebreaking contract allows smaller icebreakers to deploy first, a shift from previous seasons.1
Finland’s icebreakers are designed for heavy icebreaking in the Baltic Sea, with newer vessels built to IACS Polar Class rules. Older vessels meet or exceed the 1A Super requirements.1
Sweden
Swedish Maritime Administration icebreakers Frej and Oden are assisting vessels in the Bay of Bothnia, although Atle, Idun, and Ymer operate in the Gulf of Bothnia.1 Ale is working in Vänern, Sweden’s largest lake.1 The administration is also utilizing its buoy and lighthouse support vessels, Scandica and Baltica, for icebreaking.1
The Swedish Maritime Administration recently warned of strained icebreaking resources, leading to closures and longer wait times.1
Russia
Russia has twelve icebreakers available in the Baltic Sea this season.1 Many of these vessels are over forty years old, and a significant portion were originally built at Helsinki Shipyard.1 Russia is currently undertaking a fleet modernization program, though progress is hampered by sanctions and other challenges.1
Estonia and Latvia
Estonia’s icebreakers, Botnica and EVA-316, have freed over 50 vessels from pack ice since the start of the year.1 The older vessel Tarmo is also deployed in the Gulf of Finland.1 Latvia’s icebreaker Varma began icebreaking operations on February 4th, after a hiatus since 2018.1
Germany
Germany is utilizing multi-purpose vessels Arkona and Neuwerk to maintain open shipping lanes along its Baltic coast.1
Aging Fleet and Future Developments
A significant portion of the Baltic icebreaking fleet is aging, with many vessels exceeding forty years of service.1 Finland is initiating a replacement program for its oldest icebreaker, Voima, with construction planned to begin in 2027.1 Sweden’s plans for new icebreakers have faced funding challenges and legal disputes.1
Finland’s expertise in icebreaker design and construction is notable, having built a large percentage of the world’s icebreakers.1
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