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Is China’s nuclear attack submarine too easy to detect?

Military experts say it may not be as quiet as it should be after Japanese navy discovered vessel while submerged near disputed Diaoyu Islands

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The nuclear attack submarine is seen flying a Chinese flag on its mast in the East China Sea on January 12 in a photo released by Japan’s defence ministry. Photo: Reuters

After a Chinese nuclear attack submarine was discovered by the Japanese navy while submerged near disputed islands in the East China Sea, military experts say it could be too easy to detect. 

The PLA Navy’s 110-metre Shang-class submarine surfaced in international waters with a Chinese flag on its mast on January 12 after it was followed by the Japan Maritime Self-Defence Force for two days.

Some military experts believe the vessel was forced to surface, but others say there is not enough information to back up that theory.

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China’s defence ministry has not responded to inquiries from the South China Morning Post regarding the incident. 

What is known is that the submarine entered the contiguous zone less than 24 nautical miles from the contested Diaoyu Islands, which are known as the Senkakus in Japan. 

Relations between China and Japan have long been tense because of historical issues and their territorial disputes over the tiny, uninhabited archipelago – which lies between Taiwan and the southern Japanese island of Okinawa – that is controlled by Japan but also claimed by China.

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