Cook Strait Submarine Cable Protection Zone

This booklet is a guide to a specially protected area of Cook Strait called the Cook Strait Cable Protection Zone (CPZ). The CPZ protects vital submarine electricity and telecommunication cable links between the North and South Islands.

Transpower NZ’s submarine 350,000 volt power cables and fibre-optic telecommunications cables lie on the seabed within the Cook Strait Cable Protection Zone. These cables are vital to New Zealand’s electricity and communications systems and to New Zealand’s economy