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 cable for each direction. It was inaugurated on September 25, 1956. The cable was able to carry 35 simultaneous telephone calls. A 36th channel was used to carry up to 22 telegraph lines.
Routes under study in early 1956
A section of TAT 1 cable with the layers successively stripped back
Transatlantic telegraph cable
Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. Telegraphy is an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables.
Landing of the Transatlantic telegraph cable of 1866 at Heart's Content, Newfoundland, by Robert Charles Dudley, 1866
Tickertape recording of Queen Victoria's message to James Buchanan
A U.S. postage stamp issued to commemorate the Atlantic cable centenary
The ships used for the first attempt, at Valentia Island.