National Security Journal on MSN

Japan built a diesel-electric submarine so stealthy it can hide for weeks without surfacing — and China is so scared of it that Tokyo won’t sell it

Japan’s Soryu-class diesel-electric attack submarine achieves something once considered impossible for non-nuclear boats: ...
New York Post

North Korea displays apparent progress in construction of nuclear-powered submarine

North Korea on Thursday displayed apparent progress in the construction of a nuclear-powered submarine, with state media photos showing a largely completed hull, as leader Kim Jong Un condemned ...
AOL

Diesel Engines Need Oxygen, So How Do Submarines Use Them Underwater?

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 ...
Real Engineering on MSN

A $100 million submarine sank a $6.2 billion US aircraft carrier

During a naval exercise in 2005, a Swedish Gotland-class submarine managed to penetrate the defenses of a U.S. Navy carrier strike group. The diesel-electric submarine slipped past anti-submarine ...
Jalopnik

Diesel Engines Need Air, Submarines Run Underwater, So How Do Diesel Submarines Work?

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 ...