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A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean , seas , straits , etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers ).
Cables can also be composed of dielectric fluids or hydrocarbon fluids, which act as electrical insulators. These substances can be harmful to marine life. [127] Fishing, aging cables and marine species that collide with or become entangled in cables can damage cables and spread toxic and harmful substances into the sea.
Submarine cable is any electrical cable that is laid on the seabed, although the term is often extended to encompass cables laid on the bottom of large freshwater bodies of water. Examples include: Submarine communications cable
A cable layer or cable ship is a deep-sea vessel designed and used to lay underwater cables for telecommunications, for electric power transmission, military, or other purposes. Cable ships are distinguished by large cable sheaves [ 1 ] for guiding cable over bow or stern or both.
Timeline of submarine cables, 1850–2007 — at Atlantic-Cable.com TeleGeography submarine cable map — at TeleGeography.com The International Cable Protection Committee — at ISCPC.org, includes a register of submarine cables worldwide (though not always updated as often as one might hope)
Submarine power cables can operate at many kilovolts: for example, the Fenno-Skan power cable operates at 400 kV DC. A cable termination station is the point at which the submarine cable connects into the land-based infrastructure or network. A cable termination station may be the same facility as the cable landing station, or may be many miles ...
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