The age of diesel-powered submarines began in 1912, and these subs dominated the waters for more than 40 years, through both World War I and World War II. In the U.S., this era ended when the last ...

Submarines began navigating the depths before the 1900s, and they've advanced considerably in all that time. Modern military subs are stealthy, nearly silent killers roaming below the waves, and the U ...

Undersea fiber-optic cables, which stretch over 1.2 million kilometers (750,000 miles) across the ocean floor, are being used in a new way for anti-submarine warfare. A developing technology called ...