How did the Antarctic scientific research ship "Longxue" open the ice layer to make the water expand?

According to the data, China's polar scientific research ship didn't break the ice until the third generation-1994. Now, Jiangnan Shipbuilding, the first self-built icebreaker for polar scientific research in China, has officially started construction.

The new generation of scientific research icebreaker built in China is13,000 tons, with a total length of 122.5 meters, a width of 22.3 meters, a structural draught of 8.3 meters, a deadweight of about 4,500 tons, a maximum speed of 16.8 knots and an endurance of 20,000 nautical miles.

When the thickness of the ice layer is less than 1.5 meters, the icebreaker mainly relies on the power of propeller and bow to split and crush the ice layer, and can sail in the ice sea for 9.2 kilometers per hour.

If the ice layer is thick and the bow of the icebreaker is shallow, it is easy to rush to the ice layer, and the ship will crush the thick ice layer below to pieces. Then the icebreaker goes backwards for a certain distance, and then rushes to the ice in front with full horsepower, crushing the ice under the ship. Over and over again, a new channel was opened.