Kazakhstan, Azerbaijan begin laying Caspian fibre-optic cable

Kazakhstan and Azerbaijan have begun laying a fibre-optic cable beneath the Caspian Sea, marking the start of offshore construction on a long-planned digital infrastructure project.

A specialised cable-laying vessel has left the Port of Baku and begun laying the submarine fibre-optic cable towards Aktau in western Kazakhstan, according to Kazakhstan's Ministry of Artificial Intelligence and Digital Development.

If weather conditions remain favourable, the offshore installation is expected to take between 15 and 20 days, while testing and commissioning are scheduled for completion by the end of 2026.

Digital Silk Way project

The 380-kilometre cable will connect Sumgait in Azerbaijan with Aktau in Kazakhstan and will have a data transmission capacity up to 400 terabits per second, according to AzerTelecom. The project is intended to create a high-capacity digital corridor linking the two countries.

It is a key component of the broader Digital Silk Way initiative, which aims to establish a telecommunications route connecting Asia and Europe.

The armoured cable was manufactured and tested in China before being shipped to Kazakhstan's Port of Kuryk and transported to Baku for offshore installation.

Years in development

The project entered active construction after years of development. An agreement on the project was signed in 2019, before offshore installation began in 2026.

Once completed, the system will provide a direct underwater data link between Kazakhstan and Azerbaijan and increase Kazakhstan's capacity to transmit internet traffic between Asian and European digital networks.

Tags