Guichen Bay


Guichen Bay, is a bay located on the south-east coast of the Australian state of South Australia about northwest of the regional city of Mount Gambier and about south-southeast of the state capital of Adelaide. It was named in 1802 by the Baudin expedition of 1800-03 after Luc Urbain de Bouëxic, comte de Guichen. The town of Robe is located at the southern end of the bay.

Extent & description

Guichen Bay lies between Cape Thomas at its northern extremity and Cape Dombey at its southern extremity on the south-east coast of South Australia. The east side of the bay which runs for a distance of about to the south of Cape Thomas is formed by a sandy beach known as Long Beach. The bay’s south shore consists of ‘rocky points and sandy bays’ with ‘drying rocks extend a short distance offshore’. Within the bay, the water depth ranges from to over a large part of the bay. A rocky point known as Boatswain Point projects south for a distance of about to the east southeast of Cape Thomas while at the south end of the bay, there is a rocky point known as Robe Point.
A number of navigation aids are located around Cape Dombey at the bay’s south end. These consist of a lighthouse known as the Robe Lighthouse on Cape Dombey, a flashing light located near Commodore Point on the ocean coastline to the immediate south of Cape Dombey, and two lights within the bay - a light marking the end of the breakwater at the entrance of the Lake Butler marina in Robe and a flashing light near Robe Point. Prior to the erection of the Robe Lighthouse in 1972, the sole navigational aid available for navigating in Robe was a Daymark in the form of an obelisk painted with red and white bands which is known as the Robe Obelisk.

European discovery

Guichen Bay was named in 1802 by Peron and Freycinet of the Baudin expedition of 1800-03 after Luc Urbain de Bouëxic, comte de Guichen.

Ports and other settlements

Robe is the sole settlement and port in Guichen Bay. Its infrastructure consists of a jetty and a marina complete with a protective breakwater.

Protected areas

The following protected areas respectively include and adjoin the bay’s extent: the Upper South East Marine Park and the Guichen Bay Conservation Park.

Citations and references

Citations