Jan 15, 2021

The top 10 submarine cable projects of the year

Joanna England
7 min
Getty Images
Fibre optic cables are essential for power, telecommunications, and data transfer. We look at the top 10 projects happening globally to keep us connecte...

The subsea cable network sounds very state-of-the-art, but in truth, these undersea systems began keeping human beings connected in 1850. In those days, the landmark cable was made of copper and was a world first when it was laid in the channel between the UK and France, telephonically connecting the United Kingdom with the European continent. 

HVDC cables (High Voltage Direct Current) were implemented in the 1950s primarily to carry power, and in the 1980s, fibre optics were introduced for better telecommunication and data transfer.

Today, over 400 fibre optic submarine cables connect continents globally, each one transporting as much as 192TBps. But as technology marches on, so does the world’s desire for bandwidth. 

Demand is soaring. For the period 2015-2019, submarine fibre design capacity on major routes has increased at a CAGR of 32%, including upgrades and new system builds. This trajectory will continue, with predictions suggesting the submarine fibre cable industry will grow at a CAGR of 11.1% from 2020 to 2025.

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