Undersea Submarine Communication Cables

Discussion in 'Energy & Fuel' started by Yvonne Smith, Oct 27, 2020.

  1. Yvonne Smith

    Yvonne Smith Senior Staff
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    We always hear about satellite transmissions and GPS , but there is a tremendous network of cables around the whole earth that are at the bottom of the oceans and they connect countries with submarine fiber-optic cables.
    Here is a map that shows all of the places these cables go around the world.
    One of the interesting things that I was noticing is that a bunch go from off the coast of Washington and northern Oregon, where so many of the riots are happening.
    I wonder if there is some kind of a connection between the two ?
    Anyway, here is the link to the world map that shows all of the underwater cables.

    https://www.submarinecablemap.com/
     
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  2. Hal Pollner

    Hal Pollner Veteran Member
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    The first Transatlantic Cable was laid in 1858.

    H.P.
     
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  3. John Brunner

    John Brunner Very Well-Known Member
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    I first heard of those when I worked for a telecommunication company back in the 80s.

    The process of laying that cable over the undersea mountains and valleys is quite impressive. If I recall correctly, the cable has got to be hauled to the surface in order to effect repairs, because in some places it lays too deep for divers.

    I had no idea there was as much as that map shows, but in the grand scheme of things, it's no more than a pimple on a gnat in a football stadium...if that.
     
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  4. Ed Wilson

    Ed Wilson Very Well-Known Member
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    When undersea cables transmitted information in the past it was through copper wires. I read that the US was able to tap a Russian cable under the North Sea as a consequence. The fiber optic cables used these days, as far as I know, can't be tapped.
     
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  5. Hal Pollner

    Hal Pollner Veteran Member
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    Right.

    Fiber optics transmission relies on "packets" of light, not electrons as in copper conductors, making inductive coupling impossible.

    h.p.
     
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