Throughout World War II submarine warfare was widespread and merciless, but after the war it just seemed to... stop. While submarines continue to be an integral part of navies around the world, there have been only 2 submarines that sank enemy ships in combat since... | Dark Documentaries

A typical submarine deployment lasts 3 to 6 months, depending on the submarine type. Spending so much time in cramped quarters deep underwater, with no sunlight or open vistas, can be pretty hard. As Winston Churchill once said, “Of all the branches of men in the forces there is none which shows more devotion and faces grimmer perils than the submariners.” Let’s sneak aboard and take a look around. | Sunday Roast

The WW1 Submarine That Washed Up | Dark Documentaries

Nazi Germany's fleet of submarines terrorized the oceans during WWII. See what life was like on a ship in the crosshairs on Hell Below: https://bitly.com/2xv5mhv | Smithsonian Channel Aviation Nation