What is the principle of icebreaker breaking ice? Why does it break the ice and freeze?

The working principle of the icebreaker is to move the bow of the icebreaker to the ice when the powerful power machine on board is started. When the bow appears on the water, it restores all the gravity, which can crush the ice. The underwater part of its bow is very inclined to break the ice. At the same time, in order to strengthen the stress, sometimes the water storage tank at the bow will be filled with water-"liquid ballast". When the ice is more than half a meter thick, it should be subdued by the impact of the ship. At this time, the icebreaker retreated and crashed into the ice with all its mass. What works at this time is not gravity, but the kinetic energy of the moving ship; The ship seems to have become a low-speed but heavy shell, a hammer. Icebergs several meters high, the icebreaker must hit them several times with a solid bow to break them. But sometimes, as you know, the Snow Dragon can only be regarded as a little fat man in the icebreaker industry, which is still very powerful compared with cruise ships, but once it encounters some extreme weather. . . . So ... . He'll be trapped, too

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