Nuclear submarines are among the most complex machines ever built, capable of staying hidden beneath the ocean for months. This breaks down the physics of buoyancy, underwater navigation, silent ...

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.

Sri Lanka Navy personnel assist Iranian sailors during a rescue operation after responding to a distress call from their vessel, the Iranian military ship, IRIS Dena, while at sea within Sri Lanka’s ...

The US submarine torpedoed the Dena on the morning of March 4 in the Indian Ocean, about 19 nautical miles from the southern ...