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Chinese icebreaker sets sail for landmark autumn expedition in Antarctic sea

China

China

China

Chinese icebreaker sets sail for landmark autumn expedition in Antarctic sea

2025-03-23 14:48 Last Updated At:15:07

China's 41st Antarctic expedition team set sail from New Zealand on Friday for the Ross Sea, embarking on a joint research mission to conduct scientific investigations of the Antarctic in autumn.

After completing resupply and crew rotation in mid-March at New Zealand's Lyttelton Harbor in Christchurch, the team aboard China's research icebreaker Xuelong 2, or Snow Dragon 2, officially launched the Ross Sea joint expedition.

This marks China's first-ever research autumn mission in the Antarctic sea, with Chinese and international scientists working together to explore the ecosystem of the deep bay off the Antarctic coast.

He Jianfeng, deputy leader and principal investigator of the 41st Antarctic Expedition, emphasized that the expedition will make a significant contribution to scientific understanding.

"A mission during this season, focusing on the entire ecosystem, is very rare internationally. Actually, we are the first ones to research on Antarctic krill, birds, and mammals in particular. We have received a wide response from international scientists. It involves the most countries participating since our expedition in the Antarctic Ocean so far," said He.

The expedition team includes 44 researchers from nine countries, namely China, the United States, the United Kingdom, Norway, Australia, New Zealand, South Korea, Malaysia, and Thailand.

They will spend about a month conducting research on the dark marine ecosystem in the Ross Sea.

"This is my first time to be here, to be on the icebreaking research vessel. I come from a very tropic [region]. So I'm very excited and very happy to learn everything here. I plan to collect microplastics from the Ross Sea. I hope I can have an international publication. My knowledge can be extended to the younger generation, to see or to tell what is happening now and let them think about their future," said a Thai researcher from Chulalongkorn University, a member of the crew.

"My job is to study phytoplankton, and because largely, phytoplankton have never been studied in the March-April time period. And so, it's unknown whether they're active. The cruise is an incredible opportunity for me and the entire science crew," said Walker Smith, a professor of Shanghai Jiaotong University and another member of the crew.

While international data on summer investigations in the Antarctic Ocean is abundant, He, the chief scientist, emphasized that there is a dire lack of data on other seasons.

Taking place during the Antarctic autumn, this expedition will focus on the "dark season" -- a period with no sunlight, scarce food, and widespread sea ice -- and aims to explore how Antarctic species like krill survive in such extreme conditions.

This mission will help fill international gaps in research and lead the study of dark ecosystems in the surrounding waters of the Antarctic, increasing China's global presence in polar scientific research.

Furthermore, researchers will test the Xuelong 2 icebreaker's performance in autumn conditions, gathering data that will help the future design and international application of China's polar research vessels.

Chinese icebreaker sets sail for landmark autumn expedition in Antarctic sea

Chinese icebreaker sets sail for landmark autumn expedition in Antarctic sea

China unveiled a large wind-assisted propulsion system for ships in the coastal city of Dalian, northeast China's Liaoning Province, on Friday, marking a major leap forward for the country in the field of high-end vessel marine environmental protection equipment.

The wind-assisted propulsion system - rotating sail system (WAPS-RSS), is developed by Luoyang Ship Material Research Institute of China State Shipbuilding Corporation Limited (CSSC).

The system's rotor has diameter of 5 meters, is 35 meters high, and weighs 150 tons.

Experts say that the system can efficiently capture wind energy while the ship is sailing, providing additional thrust for the vessel.

On average, it can save fuel consumption by 5 to 25 percent for large ocean-going vessels, and lower carbon emissions accordingly.

It relies on the Magnus effect, which is much like a loop in table tennis, featuring a rapidly spinning sphere that causes the surrounding air to rotate. Pressure decreases on the side with faster airflow and increases on the side with slower airflow, creating a lateral pressure difference that generates lateral thrust.

"Standing on the deck, the powerful thrust generated by its rotation assists the ship's sailing. Our system - the world's largest rotary sail - reaches a maximum rotational speed of 180 revolutions per minute and can generate a maximum of 355 kilonewtons of thrust. Additionally, the system's intelligent control integrates multiple sensors to detect real-time wind and ship conditions. Through smart algorithms, it automatically adjusts to maintain optimal performance at all times, maximizing the utilization of wind energy," said Guo Yu, vice president of SunRui Marine Environment Engineering Company Limited under Luoyang Ship Material Research Institute.

Not only does the system's performance meet international advanced standards, but the project team has also overcome a series of engineering challenges, including the fabrication of giant composite structures, complex system integration, and intelligent coordinated control.

Compared with mainstream international technological approaches, it offers greater production efficiency and cost advantages.

Currently, the system has secured its first batch of orders and will complete actual vessel applications as scheduled.

China unveils large wind-assisted propulsion system for ships

China unveils large wind-assisted propulsion system for ships

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