GUGI is a specialist unit tasked with sabotage. And it's menacing the undersea cables that carry internet data.

Groundbreaking detection technology can allegedly identify submarines at a distance of nearly 12 miles underwater, with the ...

The original INS Mulki, commissioned on May 10, 1984 and decommissioned in 2003, was part of a fleet of six vessels dedicated ...

Submarines have changed both naval warfare and global politics. Here are some of the most important submarines that ever ...

OceanGate submersible implodes en route to Titanic site, raising questions about company operations and safety practices.

Stealth submarines can spend a very long time underwater nearly anywhere on Earth, and the U.K.'s Astute-Class subs can take ...

Former OceanGate scientific director Steven Ross stated at the hearing that the submarine Titan 'was not functioning ...

This video shows men riding shared bikes into a flooded area in Wuxi, Jiangsu Province, eastern China, on Tuesday, September ...

The process involves covering a submarine with a network of optical fibers thinner than a human hair. The fibers are then ...

The submarine sits partially submerged in mud in about 100 feet of water in the Potomac River and the Piney Point Lighthouse ...

Despite some program challenges, the Los Angeles-class has been essential to U.S. naval supremacy and continues to play a key ...