Hazard spot
Gulf of Bothnia: Drifting ice
Gulf of Bothnia: The gulf freezes over widely every year and ice pressure deforms pontoons and piles. Winter storage ashore is the rule here.
- Cause
- Drifting ice
- Main season
- December to March
- Position
- 63° 30,0' N 021° 00,0' E
On the map
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Gulf of Bothnia: how the place works
The northernmost part of the Baltic freezes over across its full width every year, and the ice holds from December into April. Where icebreakers keep leads open, the broken ice drifts with wind and current and packs into fields.
Gulf of Bothnia: what breaks there
Ice pressure at the waterline is the real problem, not the single impact. At the berth the ice presses boats against pontoons and piles, and during the thaw fittings tear out that were frozen in all winter.
Gulf of Bothnia: what this means for your policy
Ice pressure and drifting ice are excluded in many sets of conditions or tied to requirements. Anyone leaving a boat afloat there over winter needs explicit written agreement, usually together with a bubbler system.
Read this in full: Ice is not an accidentCruising range
This spot lies in the cruising range the calculator lists under this step: Worldwide
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And what applies right now?
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