Technological milestone

The lasting transatlantic telegraph connection

Establishing a durable telegraph link across the Atlantic Ocean.

When: 1858–1866
Where: North Atlantic

Robert Charles Dudley’s depiction of the Atlantic cable landing at Heart’s Content, Newfoundland, in 1866.

Submarine cables changed the speed of communication between Europe and North America. The first celebrated connection failed, and years of engineering work were needed before a lasting service was established.

Background

Messages carried by ship

Before the cable, Atlantic communication depended on ocean crossings. Undersea telegraphy promised much faster exchange but required reliable insulation, cable laying and electrical operation.^[1]

What happened

1858
A short-lived link
The first transatlantic cable carried messages but soon failed.^[1]
1866
A lasting connection
A further attempt successfully established a durable cable service.^[1]

Impact & evidence

1858–1866

Failure preceded a lasting connection

The 1858 cable briefly carried messages across the Atlantic before it failed. Laying a cable was only part of the problem: it also had to survive undersea conditions and transmit a usable electrical signal across an immense distance. The successful 1866 connection made the achievement durable. Communication between continents no longer depended entirely on the journey time of a ship.^[1]

Aftermath & legacy

A network beneath the sea

The connection helped develop a worldwide submarine network. It linked communications with commerce and political power as well as reducing the time required to exchange news.^[1]

Sources & image credits (1)