This[0] is an interesting account of an accident with a submarine and how sonar played a role in the event. [0] https://en.wikipedia.org/wiki/Ehime_Maru_and_US

This[0] is an interesting account of an accident with a submarine and how sonar played a role in the event. [0] https://en.wikipedia.org/wiki/Ehime_Maru_and_USS_Greeneville_collision https://en.wikipedia.org/wiki/Ehime_Maru_and_USS_Greeneville...