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Submarine cable

A submarine communications cable is a cable laid on the sea between land-based stations to carry telecommunication signals.

Modern ”sea cables” are typically about 2,5 centimeters in diameter for the deep-sea sections, larger cables are used near shore. Optical fibre cables are anymore not only simple point-to-point connections, but multiple destinations can be served by a single cable system. Capacity has increased manyfold over the past years, reaching terabits per second overseas.