During winter, the sea can cover itself up to 2 meters thick by ice, making it an ideal time for an Icebreaker cruise in Finland. However, at the beginning of the winter, the ice thickness is around 30-50 cm, less than what it is during the peak season. The five-month long water freeze turns Bothnian Bay into an endless frozen sea, providing a perfect setting for the Icebreaker cruise and an unforgettable experience of ice floating. Show more