There was an Argentinian one, 2017. > The information about the possible explosion was received on Thursday from the Comprehensive Nuclear Test-Ban Treaty Orga

There was an Argentinian one, 2017. > The information about the possible explosion was received on Thursday from the Comprehensive Nuclear Test-Ban Treaty Organization, or CTBTO, an international body that runs a global network of listening posts designed to check for secret atomic blasts. https://www.reuters.com/article/us-argentina-submarine-flight-idUSKBN1DN19V https://www.reuters.com/article/us-argentina-submarine-fligh...