Story: Engineering on the sea floor

Upgrading cables (1st of 3)

In 1991, three new power cables and two new fibre-optic cables were laid along the Cook Strait sea floor. The new power cables are 126 millimetres in diameter, very heavy (1 metre weighs 52 kilograms), and can carry 350 kV 1,430 amps of high-voltage direct current. Watch footage of the Skagerrak laying them.

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Transpower New Zealand

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How to cite this page:

Keith Lewis, 'Engineering on the sea floor - Submarine cables', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/video/6635/upgrading-cables (accessed 7 August 2020)

Story by Keith Lewis, published 12 Jun 2006