NATO has expanded its footprint in the North Atlantic, partially in response to an increased Russian submarine presence.

The U.S. Navy has reached a Cold War-era milestone in the Arctic, deploying two Virginia-class submarines beneath the polar ice cap for the 100th time since World War II.

Most of China's submarine fleet is diesel-electric, but Beijing is ramping up production of nuclear-powered classes.

The Iranian warship that was sunk in the Indian Ocean likely didn’t have the technology needed to defend itself against submarines.

What happens when the most important parts of the global network are hidden on the ocean floor? For modern navies, that question has shifted the seafloor from a backdrop into an operating environment.

Nuclear submarines carry out multiple types of missions, but no matter the mission, it's vital that they remain hidden in the ocean's depths.

Because of their stealth, operational adaptability, and capacity to project power in a way that surface ships cannot, submarines are considered one of the most important naval assets a country may ...

In the freezing waters of the North Atlantic, NATO forces are quietly preparing for a type of war few people ever see — a ...

China’s next-gen Type 096 submarines and longer-range SLBMs could threaten more of the U.S. from bastions near home.

Add Yahoo as a preferred source to see more of our stories on Google. The Ohio-class ballistic missile submarine USS Tennessee returns to Naval Submarine Base Kings Bay, Georgia, on February 6, 2013. ...

Navies play a critical role in global security, protecting trade routes, supporting military operations, and projecting ...