A transatlantic telecommunications cable is a submarine communications cable connecting one side of the Atlantic Ocean to the other. In the 19th and early 20th centuries, each cable was a single wire.
Cable laying in the 1860s
TAT-1
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TAT-1 was the first submarine transatlantic telephone cable system. It was laid between Kerrera, Oban, Scotland, and Clarenville, Newfoundland. Two cables were laid between 1955 and 1956 with one cabl
Transatlantic communications cable
…it needed a number of technological advances which did not arrive until the 1940s. Starting in 1927, transatlantic telephone service was radio-based. TAT-1 (Transatlantic No. 1) was the first transatlantic telephone cable system. It was laid between Gallanach Bay, near Oban, and Clarenville, Newfoundland…
Routes under study in early 1956
A section of TAT 1 cable with the layers successively stripped back
IEEE Milestone plaque for the first submarine transatlantic telephone cable system