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22.04.2026
In the Bay of Bothnia, there is rotten fast ice along the coasts in the north. At sea in the north, there is very close, 20–50 cm thick and in places ridged and rafted ice. Areas of open water and leads occur in the ice field. In the east, there is open to very close ice with drifting floes to Ulkokala in the south. Further south it is ice-free.
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BSIM
- BSIM-29 was held 14.-15. October 2025 at the Federal Ministry of Transport in Berlin, commemorating 100 Years of collaboration (tentative Agenda).