Were any US submarines torpedoed during the Vietnam war?

Answer 1

I was stationed on 2 separate submarines during the Vietnam conflict. One was a old diesel sub and the other an attack nuclear sub. The diesel boat was operating close to ports in the south china sea and ran into a sub net that was stretched across an opening to one particular bay or port (when on subs, you are not told your location). Anyway, we heard the ripping and scratching along the sides and in the propeller. At the same time, we heard the commander in the control room screaming "Romeo, Romeo !. Romeo is an old Russian diesel submarine. They chased us back out to sea as fast as we could do. Along the way I am not sure if we were fired on, but it was a hairy ordeal and our main hydraulics got broken which put our boat on a death dive toward the bottom of the ocean. Next thing I knew, a sailor climbed up the wall of the sub to the station for "blowing" the rear ballast tanks with air. We slowly came to a stop and started back up backwards. We came out of the water in reverse and fell back down to the surface. Divers went out and cleared the steel netting and we went on our way. So, to answer your question, If subs were not actually hit by torpedoes, I am positive they enemy (Russians, vc, or whoever), tried hard to destroy our subs.