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UDT Asia: Japan boosts submarine technologies

12th January 2017 - 04:00 GMT | by Koji Miyake in Tokyo

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This year Japan will start building a Soryu-class submarine for the Japan Maritime Self-Defence Force (JMSDF) containing a host of new technologies and is scheduled to enter service in FY2021.

Funded under the budget announced in August 2016, the boat will feature four new technologies, the first of which is lithium ion batteries. Current Soryu-class submarines were equipped with an air-independent propulsion (AIP) system but this generates low power and occupies considerable space inside the hull. 

Lithium ion batteries on the other hand will improve the submarine’s underwater speed and free up internal space.

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