Project Profiles

Submarine 22kV Cable Installation Tamar River
Tasmania 2007

Client: Olex Cables/Aurora Energy

Tamar River

Daly’s Constructions completed this project for Olex Cables/Aurora Energy in Tasmania. The project was a turnkey design and construction project, 3 kilometres in length, consisting of 1,300 metre land cable installation, an 890 metre submarine crossing of the Tamar River and a 780 metre submarine crossing of the West Arm.

The first submarine cable was installed across West Arm, a shallow estuary at 6 metres depth, with 2 knot currents. The methodology chosen for the crossing was to float the cable using Daly’s designed and manufactured cable pillow floats.

The second submarine cable crossed the Tamar River at 40 metre depths, with 3 knot currents. The methodology chosen for this crossing was a barge lay.

The project was delivered on time and in accordance with the strict environmental conditions identified by the Tasmanian Department of Primary Industries and Water.