The United States may need more Columbia-class submarines to break even with existing submarine nuclear capabilities in the ...

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 ...

Britain will build up to 12 new nuclear-powered submarines, Sir Keir Starmer will announce as he unveils his much-anticipated defence review. In a bid to “ensure the UK rises to the challenge” of ...

Ever since they started sailing the world's waterways in the 17th century, submarines have evolved significantly in the years since. Subs are some of the most important naval vessels in any blue water ...

Chinese vessels are mapping the sea floor at strategically vital regions of the world's oceans, building detailed knowledge ...