A Japan Coast Guard boat (front) and vessel sail as Uotsuri island, one of the disputed islands, called Senkaku in Japan and Diaoyu in China, is pictured in the background, in the East China Sea, in ... more 
A Japan Coast Guard boat (front) and vessel sail as Uotsuri island, one of the disputed islands, called Senkaku in Japan and Diaoyu in China, is pictured in the background, in the East China Sea, in this August 18, 2013 file photo. Japan said on August 1, 2014, it has named 158 previously unnamed and often uninhabited islands, including five in waters disputed with China, in order to clarify its maritime borders. "We have been working on naming isolated islands in order to consolidate our borders according to and within the scope of our basic policy of maritime management of our isolated islands. That work is now done and has been published on the website of our Headquarters for Ocean Policy," Chief Cabinet Secretary Yoshihide Suga told reporters on Friday. Japan is currently embroiled in a territorial dispute with China over a chain of islets in the East China Sea known as the Senkakus in Japan and the Diaoyu islands in China. REUTERS/Ruairidh Villar/Files (EAST CHINA SEA - Tags: POLITICS MARITIME) less 
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Reuters | Photo By STAFF / REUTERS
Fri, Aug 1, 2014 5:36 AM EDT