The Soviet Union built revolutionary titanium-hulled submarines—like the Alfa-class—that were faster and could dive deeper than any American sub. -The U.S. Navy, however, never copied this strategy. It was a deliberate choice.

The multi-year deal to buy 15 nuclear submarines for the U.S. Navy that has been delayed by negotiations over ballooning costs of labor and material could be wrapped up by the end of the year, HII officials said during a Thursday earnings call.

Converted bombers would roar a few hundred feet above the sea dropping depth charges and firing rockets; with over 120 Allied aircraft shot down while attacking submarines this was in no way a one-sided affair.

China's surface navy is growing at a rapid pace as busy shipyards turn out new warships, but the US maintains an edge underwater with its submarines.

The U.S. Navy's Maritime Industrial Base Program is investing in Lincoln Electric to integrate AM into submarine construction.

During both world wars, the German Navy tried its utmost to bring the UK to heel through unrestricted submarine warfare. Conversely, the Royal Navy deployed countless warships, men, and resources in combating the U-boat menace that threatened to starve Britain.

Lt. Angelo Belloni seized control of submarine F-43 at the Muggiano shipyards near La Spezia, Italy. The coastal submarine, originally built for the Russian Navy and designated to become the Svyatoi Georgjy,

A display of confiscated vessels at a naval base in Ecuador offers a peek at why drug smuggling is so hard to stop.