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 ...

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 ...

Diesel-electric submarines like the Taigei class offer Japan a fearsome weapon against China—at a fraction of the cost of cutting-edge American ones.

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 ...

Scale model of the Chinese-manufactured S26T submarine design being constructed for the Royal Thai Navy. (Gordon Arthur) CHRISTCHURCH, New Zealand — Once tempted to ditch its acquisition of a ...