https://www.janes.com/article/83625/japan-launches-first-soryu-class-submarine-equipped-with-lithium-ion-batteries
Japan launches first Soryu-class submarine equipped with lithium-ion batteries
**riel Dominguez, London - Jane's Defence Weekly
08 October 2018
Japanese shipbuilder MHI launched Oryu, the first Soryu-class submarine on order for the JMSDF equipped with lithium-ion batteries, on 4 October. Source: JMSDF