page_title: Guichen Bay
section_title: Extent & description
hierarchical_section_title: Guichen Bay / Extent & description
caption_attribution_description: English: Lighthouse, Robe. Photo by me on 1/12/2006.
context_page_description: Guichen Bay, is a bay located on the south-east coast of the Australian state of South Australia about 115 kilometres northwest of the regional city of Mount Gambier and about 270 kilometres 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.
context_section_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 6 nautical miles (11 km; 6.9 mi) 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 9.1 m (30 ft) to 11 m (36 ft) over a large part of the bay. A rocky point known as Boatswain Point projects south for a distance of about 0.75 nautical miles (1.39 km; 0.86 mi) 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.
caption: Robe Lighthouse
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