Built and designed over 50 years ago, the Soviet K-222 submarine still holds the record for the world's fastest submarine ever built, reaching speeds of 82.8 kilometers (51.4 miles) per hour or 44 ...

Ships and submarines fight wars above the waves and below, but which of those two is faster? We break down the differences in ...

Another trait submarines need is speed. They're far from the fastest vessels in the world's oceans – five of the fastest navy ships exceed 40 knots — but speed is a necessity in order to ...

Some of the world's fastest diesel-electric submarines were Argentina's TR-1700-class subs, the ARA Santa Cruz (S-41) and ARA San Juan (S-42). They could cruise at 17.3 mph on the surface and ...

The UK announced it laid the keel for the HMS Dreadnought, the first of a new class of nuclear submarines meant to replace the Vanguard ...

The USS Nautilus was the world's first nuclear-powered submarine. It participated in scientific and military operations ...