A British naval supply ship with an on-board helicopter was deployed to track the stealthy Kilo-class submarine Krasnodar, the Royal Navy said.

In the midst of the Falklands War, British sailors hunting for ARA San Luis launched ordnance at the sonar and radar signals ...

Allied firepower in the Western Pacific will get a significant boost with as many as five U.S. and British submarines operating from Australia by 2027, according to a report by an Australian think ...

Researchers discovered the wreck of a World War II-era submarine off the coast of Norway this year. The HMS Thistle was a British sub that sank after being hit by a German vessel in 1940. Researchers ...

What You Need to Know: In February 1945, U-864 embarked on a secret mission, Operation Caesar, carrying valuable technology and materials to Japan. However, its journey was cut short when British ...

Russian submarines ‘shadowed spy ship’ as it mapped UK undersea gas link - A Russian submarine was discovered escorting the ...

For three straight days, the British Navy closely followed a Russian submarine as it moved through one of the world’s busiest shipping lanes — the English Channel. The operation began when the Russian ...

What You Need to Know: In February 2009, the British HMS Vanguard and French Le Triomphant, both nuclear-powered ballistic missile submarines, collided in the Atlantic Ocean during routine patrols.

A collision between a British nuclear-powered submarine carrying multiple nuclear warheads and a French nuclear submarine armed with a similar payload may have been the result of lack of communication ...