Transatlantic telegraph cable
Overview
 
The transatlantic telegraph cable was the first cable
Submarine communications cable
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean....

 used for telegraph communications laid across the floor of the Atlantic Ocean
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

. It crossed from the Telegraph Field, Foilhommerum Bay, Valentia Island
Valentia Island
Valentia Island is one of Ireland's westernmost points, lying off the Iveragh Peninsula in the southwest of County Kerry, Ireland. It is linked to the mainland by the Maurice O'Neill Memorial bridge at Portmagee, as well as by a ferry which sails from Reenard Point to Knightstown, the island's...

, in western Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 to Heart's Content
Heart's Content, Newfoundland and Labrador
Heart's Content is an incorporated town in Trinity Bay on the Bay de Verde Peninsula of Newfoundland and Labrador, Canada. The natural harbour that makes up the town is located on the east side of Trinity Bay and it is built along the northeast side and the southeast base of this...

 in eastern Newfoundland. The transatlantic cable
Cable
A cable is two or more wires running side by side and bonded, twisted or braided together to form a single assembly. In mechanics cables, otherwise known as wire ropes, are used for lifting, hauling and towing or conveying force through tension. In electrical engineering cables are used to carry...

 connected North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 and Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, and expedited communication between the two.
 
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