The Royal Navy’s Astute-class is arguably the most advanced hunter-killer submarine ever built in the UK. -This 7,400-ton nuclear-powered “ghost” is a master of stealth, using a quiet pump-jet ...

Constructing Virginia-class submarines like the USS Massachusetts showcases both the excellence in American engineering and the underlying, fundamental weaknesses in America’s shipyards.

Piloted by artificial intelligence (AI), the unmanned Ghost Shark can spend weeks at sea undetected on surveillance or ...