In this photo provided by China's Xinhua News Agency, Chinese icebreaker Xuelong, or Snow Dragon, is harbored in Shanghai, after an 85-day scientific quest across the Arctic ocean, Thursday, Sept. 27, 2012. The Chinese icebreaker has docked at Shanghai after becoming the first Chinese vessel to cross the Arctic Ocean. (AP Photo/Xinhua, Pei Xin)

(AP)—A Chinese icebreaker docked Thursday at Shanghai after becoming the first vessel from China to cross the Arctic Ocean, a landmark trip that is part of Beijing's efforts to expand its presence in the Arctic.

With melting icecaps accelerating the opening of new shipping routes and the exploration of oil, gas and in the Arctic, China has been eager to gain a foothold in the region.

The icebreaker Snow Dragon returned to Shanghai after wrapping up a three-month mission that took it from the Pacific Ocean to the Atlantic via the Arctic, the Shanghai-based Polar Research Institute of China said in a statement. The vessel's 119 crew members completed an oceanic survey in waters around Iceland with their Icelandic counterparts.

Though it has no territorial claims in the Arctic, China has been lobbying for permanent observer status on the eight-member Arctic Council in a bid to gain influence.

During summer months when they are passable, Arctic between China and Europe are 40 percent faster than traveling through the Indian Ocean, the Suez Canal and the .

The institute's statement said Snow Dragon gained "first-hand information about navigation in lanes as well as the oceanic environment, and carried out useful exploration and practice for our nation's ships that use Arctic passages in the future."