Which US submarine launched a torpedo from the deepest depth ever recorded?

The USS Dolphin, a research submarine, holds the record for launching a torpedo from the deepest depth ever recorded. This achievement is significant because it demonstrates advanced engineering and operational capabilities in deep-sea environments. The Dolphin was designed for deep submergence, which enabled it to reach depths that are not typically accessible to conventional submarines. Its ability to launch a torpedo from such depths highlights the advancements in submarine technology and operational tactics, making it a notable milestone in naval history.

While other submarines mentioned may have been involved in various significant naval operations or research, none are documented to have launched torpedoes at the extreme depths achieved by the Dolphin. This underscores the specialized role that the Dolphin played in deep-sea exploration and naval technology development.