Diesel-electric subs are quieter and cheaper, and, yes, some countries still run them. Here's an article about a new lithium-ion one: https://www.thedrive.com

Diesel-electric subs are quieter and cheaper, and, yes, some countries still run them. Here's an article about a new lithium-ion one: https://www.thedrive.com/the-war-zone/37083/japan-just-launched-its-first-big-whale-lithium-ion-battery-powered-submarine https://www.thedrive.com/the-war-zone/37083/japan-just-launc...