May 13, China's polar scientific expedition icebreaker "Snow Dragon" again sailed into the Jiangnan Shipyard (Group) Co., Ltd. shipyard, for a period of 38 days warranty and maintenance works, and trials on June 20 sunrise dock. In July this year, "Snow Dragon" plan to go again, do Chinese Arctic expedition sixth mission.

    Last year, "Snow Dragon" restorative maintenance and reconstruction project total construction division, Jiangnan Group Operations Department Office of repairing the main Ren Wugang, this year is still responsible for the "Snow Dragon" warranty and repair works. Wu Gang introduction, this warranty and maintenance work involving a total of 4 364 categories of construction projects, including repairs 251 warranty 113, including the replacement of main propellers, adjusting chamber stability, installation expedition equipment.

    It is understood that the propeller "Snow Dragon" was originally planned to replace the overhaul last year, but because the equipment is difficult to deliver on time, so the delay to replace it this year. Jiangnan Group in this repair process, on board the original shaft has been adjusted maintenance, repair scratch after work, try lowering the temperature of operation is the thrust bearing.

    After sailing the Antarctic, "Snow Dragon" cabin crew generally reflect the stability needs to be further improved. To this end, the southern group after communication with the China Polar Research Center, developed a two-stage adjustment programs. Currently, Jiangnan Group has been the addition of the ship tank piping, and the use of tank capacity correction technique, precise measurement of tank capacity to master cabin stability. Wu Gang said the next maintenance, the Jiangnan Group, or by increasing the blocking plate will try other methods to further enhance the stability of the ship.

    In addition to the various parts of the hull repairs carried out outside a major focus of this project is the addition of expedition equipment. Since the construction of Arctic research station sail without mandate, the "Snow Dragon" laden task is greatly reduced, the task becomes more arduous expedition. To this end, "Snow Dragon" add a folding arm crane, stern A-frame, 3000 m hydraulic winches, stern laboratories expedition and auxiliary equipment, also installed 10,000 meters under the boat fish finder.