In a 2005 war game, the Swedish diesel-powered submarine HMS Gotland "sank" the U.S. Navy's $6 billion-plus USS Ronald Reagan ...

Nuclear-powered aircraft carriers that sail with the United ... engine and fueled by either liquid oxygen or conventional diesel fuel. In practical terms, it's nearly silent when it's hunting ...

At Hitachi’s factory in Newton Aycliffe, north-east England, testing has just finished on a new “tri-mode” train, in which one diesel generator ... says to run its battery-powered trains on the UK’s ...

At Hitachi’s factory in Newton Aycliffe, north-east England, testing has just finished on a new “tri-mode” train, in which one diesel ... powered trains on the UK’s rail network, small ...

China is relatively new to replenishment ships and tends to build new vessels. The US Navy has 100 years of experience and ...

Attack submarines are arguably the decisive weapons in high-intensity warfare between foes separated by oceans. Mobile, ...

BERLIN — Germany’s famed Harz Mountain Railway — a 140-kilometer (87.5-mile) meter-gauge network run by the Harzer ...

If a small diesel-powered sub that cost about $100 million—or approximately the cost of two F-18 Super Hornet aircraft out of the dozens on board a U.S. aircraft carrier—could sink a $6 ...

Electra unveils the EL9, a hybrid-electric aircraft designed for sustainable, noise-free, and efficient regional air travel.