Submarines came to the forefront of military navies with the advent of WWI, as Germany's dangerous U-boats proved a ...

By 1914 the submarine was not a new weapon, having first been used 150 years earlier. By the start of WW1 all the major powers possessed submarines, but their role was still undefined. Were they long ...

Since that time, U.S. submarine construction has grown from approximately 30,000 tons per year to nearly 130,000 tons — approaching its Cold War peak. Enabling this growth has been $6.6 billion ...