Since 1991, Navy subs have launched scores of cruise missiles in combat, but the torpedo attack off Sri Lanka is a return to form after 80 years.

Secretary of Defense Pete Hegseth called the sinking of an Iranian warship with a single Mk48 torpedo a "quiet death."

The Torsk's sinking of the Japanese vessel marked the last U.S. submarine kill for over eight decades - that is until March 3, 2026.

(CNN) — US Secretary of Defense Pete Hegseth said Wednesday that a US submarine sank an Iranian warship in international waters after Sri Lanka’s Navy said it rescued more than two dozen people from an Iranian vessel that was sunk off its shoreline.

Ever since they started sailing the world's waterways in the 17th century, submarines have evolved significantly in the years since. Subs are some of the most important naval vessels in any blue water navy, as they can protect surface ships while engaging ...

Lockheed secured a potential $480 million Navy contract for AN/SQQ-89A(V)15 anti-submarine warfare system engineering support.

Submarines operated in both the Atlantic and Pacific theatres, attacking warships, merchant vessels and supply routes throughout the second World War.

Eight AUKUS submarines will give Australia sufficient deterrence and combat capabilities. Four defense giants have teamed up to develop the combat system for Australia’s new nuclear-powered submarines. BAE Systems, Raytheon Australia, General Dynamics ...

Ottawa will have to perform a delicate balancing act between learning from procurement mistakes, pivoting to new supply chains and meeting North American alliance commitments

Hegseth stressed that the operation is still in its early days, noting that "metrics are shifting, dust is settling and more forces are arriving." Hegseth said the U.S. could "sustain this fight easily for as long as we need to" and "we're just getting started.