High Quality Content by WIKIPEDIA articles! MV Xu? Long is a Chinese icebreaker and research vessel. A Vitus Bering–class icebreaker built at the Kherson Shipyard in Ukraine and completed on 1993-03-25, Xu? Long is a sister ship of the Russian Vasiliy Golovnin. MV Xu? Long is notable because of its unexpected arrival in 1999 at the small Canadian coastal village of Tuktoyaktuk, on the Arctic Ocean. The Canadian authorities‘ inability to track the vessel stirred enough controversy that the incident is still being cited as evidence of Canadian unpreparedness to defend its northern sovereignty. In addition to helicopter, the ship also carries an Arctic class ARV autonomous underwater vehicle on regular base. The ship undertook a second Arctic expedition from July 15, 2003 to September 26, 2003. More recently the ship had been used in connection with China's efforts to maintain a scientific presence in the Antarctic.

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