Laying of First Transatlantic Telephone Cable

HMTS MonarchJune 28, 1955

The HMTS Monarch, the largest cable laying ship in the world at the time, launches from Clarenville, Newfoundland to begin laying TAT-1, the first Transatlantic telephone cable. TAT-1 would be inaugurated 15 months later on September 25, 1956. TAT-1 may be best known for carrying the famous “hot line” between the United States and the Soviet Union during the Cold War.

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