Chilling video captures the terrifying moments before a tourist submarine, filled with eager families, began to sink, inciting screams and panic among those on board. Tragically, in the moments ...

Water floods in, and oxygen runs out as one submarine crew faces its worst nightmare! In today’s insane true story, discover what really happens as a submarine sinks, trapping its crew in an ...

Decades before Tom Clancy wrote “The Hunt for Red October,” an Italian naval officer pulled off a stunt that could have come straight from a Cold War spy novel — he stole a submarine to spark a war.

North Korea is widely believed to be developing a new ballistic missile submarine that could one day be trouble for US forces and allies in Asia.