TOKYO -- Japan is quietly upgrading its submarine capabilities, adding some of the stealthiest boats in the world to its fleet to maintain a competitive edge over China.
Indo-Pacific
Japan's new Hakugei submarine packs a stealthy underwater burst
Lithium-ion battery extends deep-sea operations to better compete with China
Japan's newest submarine Hakugei is delivered to the Ministry of Defense by Kawasaki Heavy Industries at a ceremony in Kobe on March 20. © Kawasaki Heavy Industries
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