It isn't too easy to actually "see" a mountain without active sonar that you don't use while on patrol in a submarine. They also don't have windows... I believ

It isn't too easy to actually "see" a mountain without active sonar that you don't use while on patrol in a submarine. They also don't have windows... I believe there are some modern sensors that could have helped, but it is questionable that they were installed. This sound far more like saving face and maybe even incompetence by higher officer ranks.