BT has completed a submarine broadband cable project in Scotland, claiming it has been hailed as the most complex underwater engineering challenge ever undertaken by the telco. The installation included 250 miles of fibre optic cabling across 20 seabed crossings.

The subsea deployment is part of a wider, £410 million programme named Digital Scotland Superfast Broadband project. The aim of the project is to build a fibre network to bring broadband to 84% of the Scottish islands and highlands by 2016.

“Today marks an incredibly important step in the completion of the most complex ever underwater engineering that Scotland has seen,” Deputy First Minister, John Swinney said. “It is a hugely impressive technological feat that work has been completed in such a short timescale.

Work on the main network that also links the subsea connections together is expected to complete by springtime next year. As well as the islands and highlands, the overall project includes the rest of the Scotland covering 750,000 premises.

Brendan Dick, BT’s Scotland Director said: “This underwater spider’s web of fibre optic cables is set to deliver a seismic shift in communications for Scotland’s island communities, bringing them in closer touch with the rest of the world than ever before.”