Ukraine has scored a significant intelligence victory, gaining access to confidential documents related to Russia's newest and most lethal nuclear submarine. The data reveals specific design flaws in ...

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 ...

Submarines appeared on the global stage during World War I, when Germany unleashed a campaign of unrestricted submarine warfare in 1917 to sever supply lines between Great Britain and its allies. In ...