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 ...

While diesel engines don't need spark plugs, they do need air ventilation for proper combustion. This is a problem for vessels traveling underwater, such as submarines. Yet diesel submarines exist and ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. chinese flag alongside a large submarine - Kevin Frayer/Getty Images China's submarine fleet has always been big, but it's also ...

Submarines are among the most advanced and mysterious machines ever built. Designed to operate beneath the surface of the sea ...

On the eve of the raising of the St. Andrew's Flag, the crew completed a program of tests that confirmed the submarine's specified performance characteristics ST. PETERSBURG, December 16. /TASS/. The ...