During the Cold War, the Soviet Union chased exotic undersea performance with titanium-hulled submarines like the Alfa and ...

But they spared civilian boats, even those carrying Russian oil from Russian ports to finance the Russian war on Ukraine.

South Korean shipping giant Hanwha Group has teamed up with U.S. defense startup Vatn Systems to develop autonomous ...

With fifth-generation submarines on the horizon, their technology has come a long way. Ultra-advanced subs of today use ...