Jang Bogo class

Two people are being charged in South Korea in connection with the unauthorised transfer of classified information about the country’s submarines to contacts from overseas. The accused, both former employees of local shipbuilder Daewoo Shipbuilding and Marine Engineering (now Hanwha Ocean), are...

https://www.bairdmaritime.com/work-boat-world/maritime-security-world/naval/submersibles-naval/two-charged-in-south-korea-for-alleged-leak-of-submarine-secrets/