Transatlantic Crossing - Transatlantic Cables

Transatlantic cables are cables that have been laid along the ocean floor to connect North America and Europe. Before the advent of radio, the only means of communication across the Atlantic Ocean was to physically connect the continents with a transatlantic telegraph cable, the first of which was installed from Valentia, Ireland to Heart's Content, Newfoundland in 1858. The first transatlantic telephone cable, TAT-1, was installed in 1955. The first transatlantic fiber optic cable, TAT-8, was installed in 1988. The exchange rate between the United States dollar and British pound is still colloquially known as "cable" by financial marketeers on account of the fact the rate of exchange was one of the early uses of the transatlantic cable.