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Submarine power cable
Transoceanic electric power line placed on the seabed / From Wikipedia, the free encyclopedia
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). Examples of the latter exist that connect the mainland with large islands in the St. Lawrence River.
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Red=in operation
Green=decided/under construction
Blue=planned