The March 4 incident in the Indian Ocean marked the first time an American submarine had torpedoed an enemy vessel since the last days of World War II.

The Torsk’s sinking of the Japanese vessel marked the last U.S. submarine kill for over eight decades — that is until March 3 ...

The downing of the Iranian frigate IRIS Dena marks the first time an American submarine has destroyed an enemy warship in decades.

A single Mk-48 torpedo achieved "immediate effect" on an Iranian frigate, which was operating in the Indian Ocean, the Pentagon confirmed.

The sinking of an Iranian warship by a US Navy submarine off the coast of Sri Lanka this week is something a US sub hasn’t done in more than 80 years and is another indication that Washington’s war ...