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

A nuclear attack submarine may be the most formidable predator ever built. In 2009, I spent a week submerged aboard the USS ...

616 Tomahawk missiles sit behind one uncomfortable calendar reality: the U.S. Navy’s four Ohio-class guided-missile ...

The U.S. Navy has reached a Cold War-era milestone in the Arctic, deploying two Virginia-class submarines beneath the polar ...

Prime Minister Mark Carney touched down in Norway early Friday where he will get important face time with the Nordic ...

Add Yahoo as a preferred source to see more of our stories on Google. China's submarine fleet is improving, making advancements in stealth. In a war, China's subs could put up a tough fight in the ...

China now operates 59 submarines, compared to the US Navy’s 71—but it has expressed the clear intention to catch up.

A group of NATO navies are conducting “Operation Ice Camp Boarfish” in the Arctic Ocean—even as a war rages thousands of ...

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

President Trump said Wednesday that South Korea can build a nuclear-powered submarine. "Our Military Alliance is stronger than ever before and, based on that, I have given them approval to build a ...

Inside a diesel engine's cylinder, compressed air raises the temperature to ignite injected fuel, and the resulting force drives pistons to power the vehicle's main gears. Chief to this combustion ...