Why can a submarine with no reactor, limited speed, and a modest weapons load still create outsized problems for fleets built ...

The most dangerous submarine in the Strait of Hormuz is not necessarily the biggest one. In confined water, size can become a liability. The Strait compresses traffic into narrow lanes, packs the ...

Submarines have become one of the most powerful and least visible forces in modern warfare. Capable of operating undetected ...

At first glance, diesel submarines seem to defy basic physics. Diesel engines require oxygen for combustion, yet these ...

South Korea launched the first of three new 3,600-ton submarines this week, marking another step in its efforts to strengthen its undersea fleet and counter threats from north of the border. The ROKS ...

Most of China's submarine fleet is diesel-electric, but Beijing is ramping up production of nuclear-powered classes.

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 ...

Submarines have quietly become some of the most powerful weapons in modern naval warfare.