Facts: 20,000 Kegs Under the Sea

submarine

goce risteski

  • All the major navies around the world included submarines in their fleet by the time WWI began.

  • The Nautilus was first nuclear powered submarine, launched in September 1954.

  • The Nautilus' use of nuclear power helped it to stay submerged for longer than the old submarines of WWII.

  • Because of its incredible range, The Nautilus was the first submarine to ever travel beneath the arctic ice and reach the North Pole.

  • 12,000 cars weigh as much as one U.S. Navy Submarine used today – that’s 18,750 tons!

  • Before the Navy improved the air quality within a submerged submarine, carbon dioxide would often accumulate at a rate of one cubic foot per crew member per hour.

  • In order to submerge, a submarine must actually take on water to become denser than the water surrounding it.

New Series Premieres Wednesday, September 28 at 9P et/pt

Featured Episode

  • Photo: Truck

    Bomb-Proof My Pickup

    Making lightweight armor out of plywood and beer cans to test theories on how to better protect military Humvees.

View Episode Guide »

Watch Online

  • NGC-Full-Eps-T-rex-Walks-Again.jpg

    Watch Full Episodes

    Find full episodes of your favorite National Geographic Channel shows and watch online.

  • NGC-Videos-Solar-Storms.jpg

    Amazing Videos

    Next stop, everywhere! Explore a universe of amazing video from National Geographic shows!

     

More From National Geographic

  • Photo: Earth

    Space Photography

    The Captured Milestones—From the First Full-View Photo of Earth to the First Moon Footprint.