| Cockburn Sound | |
|---|---|
| Derbal Nara (Nyungar) | |
 Aerial photograph | |
| Coordinates | 32°12′10″S 115°44′44″E / 32.202781°S 115.745685°E |
| Type | Sound |
| Etymology | George Cockburn |
| Ocean/sea sources | Indian Ocean |
| Basin countries | Australia |
| Max. length | 24.5 km (15.2 mi) |
| Surface area | 100 km2 (39 sq mi) |
| Settlements | Perth |
 | |
Cockburn Sound (Nyungar: Derbal Nara)[1] is an inlet of the Indian Ocean on the coast of Western Australia. It extends from the south of the mouth of the Swan River at Fremantle for about 25 kilometres (16 mi) to Point Peron near Rockingham. The total area of the sound is about 100 square kilometres (39 sq mi).
It is bounded on the east by the mainland council areas of Fremantle, Cockburn, Kwinana and Rockingham, on the west by Garden Island and Carnac Island, and includes several rocky outcrops and reefs. Gage Roads lies to the north.
The sound was named in 1827 by Captain James Stirling, probably after Admiral Sir George Cockburn.[2]
The Perth Seawater Desalination Plant can be found here.
- ^ "Wangkiny / Language Glossary". derbalnara.org.au. Retrieved 10 June 2020.
- ^ "City of Cockburn History". www.cockburn.wa.gov.au. Retrieved 1 February 2017.