hunter301
06-10-22, 08:28 AM
Interesting article on Quora about a sub hitting an underwater mountain back in 1978.
https://www.quora.com/How-do-submarines-avoid-underwater-hills-or-other-obstacles-without-using-sonar
https://www.quora.com/How-do-submarines-avoid-underwater-hills-or-other-obstacles-without-using-sonar