Gulf St Vincent, sometimes incorrectly referred to as St Vincent Gulf, St Vincent's Gulf or Gulf of St Vincent, is the eastern of two large inlets of water on the southern coast of Australia, in the state of South Australia, the other being the larger Spencer Gulf, from which it is separated by Yorke Peninsula. On its eastern side the gulf is bordered by the Adelaide Plains and the Fleurieu Peninsula. To the south it is defined by a line from Troubridge Point on Yorke Peninsula to Cape Jervis on Fleurieu Peninsula. Its entrances from the southwest are from Investigator Strait, and to the southeast from Backstairs Passage, which separate Kangaroo Island from the mainland. Adelaide, the South Australian capital, lies midway along the gulf's east shore. Other towns located on the gulf, from west to east include Edithburgh, Port Vincent, Ardrossan and Port Wakefield and Normanville.
Edithburgh is a small town on the south-east corner of Yorke Peninsula in the Australian state of South Australia. Edithburgh is about 50 km (31 mi) west of Adelaide across Gulf St Vincent, but 226 km (140 mi) away by road. At the 2016 census, the locality had a population of 516 of which 454 lived in its town centre.
The Yorke Peninsula Council is a local government area in South Australia. Its boundaries include most of the Yorke Peninsula. The council seat is at Maitland; the council also maintains branch offices at Minlaton, Warooka and Yorketown.
Investigator Strait is a body of water in South Australia lying between the Yorke Peninsula, on the Australian mainland, and Kangaroo Island. It was named by Matthew Flinders after his ship, HMS Investigator, on his voyage of 1801–1802. It is bordered by the Gulf St Vincent in the northeast.
Cape Borda is a headland in the Australian state of South Australia located in the gazetted locality of Cape Borda on the north west tip of Kangaroo Island about 70 km (43 mi) west of the municipal seat of Kingscote. It was named after Jean-Charles de Borda (1733–1799), the French mathematician, physicist, naturalist and sailor, by the Baudin expedition to Australia during January 1803. It has been the site of an operating lighthouse since 1858 and is currently located within the Flinders Chase National Park.
Cape Spencer is a headland in the Australian state of South Australia located on the south west tip of Yorke Peninsula in the gazetted locality of Inneston. It was named after George Spencer, 2nd Earl Spencer by Matthew Flinders during March 1802. It has been the site of an operating navigation aid since 1950 and has been located within the Innes National Park since 1970.
SS Clan Ranald was a two decked, turret deck ship, which sank on 31 January 1909 in the Australian state of South Australia off the coast of Yorke Peninsula near the town of Edithburgh. It is the only turret ship to have been lost in Australian waters, and therefore represents a unique part of Australia's maritime history. The bulk of crew were Asian sailors (lascars). Clan Ranald is considered one of the worst shipwrecks in South Australia (SA) where only 24 survived out of the 64 crew members.
Troubridge Island is an island located in the south west corner of Gulf St Vincent in South Australia near the eastern edge of the Troubridge Shoals off the east coast of Yorke Peninsula about 8 kilometres (5.0 mi) southeast by east of the town of Edithburgh It is notable for being a site of an operating lighthouse from 1856 until 2002 and as a site for a sea bird rookery. Since 1982, the island has been part of the Troubridge Island Conservation Park.
Troubridge Hill Lighthouse is a lighthouse located on Troubridge Hill on the south coast of Yorke Peninsula in South Australia about 13.5 kilometres south west of Edithburgh and about 3.7 kilometres west of Troubridge Point.
Troubridge Point is a headland in the Australian state of South Australia located on the south coast of Yorke Peninsula about 11 kilometres south west of Edithburgh. It is the western end of the opening to Gulf St Vincent.
Seal Island is an island located in Investigator Strait off the south coast of Yorke Peninsula in the Australian state of South Australia about 7 kilometres south south-west of Stenhouse Bay. Since 1972, it has been part of the Althorpe Islands Conservation Park.
Haystack Island is an island located in Investigator Strait off the south coast of Yorke Peninsula in the Australian state of South Australia about 6 kilometres south-west of Stenhouse Bay. Since 1972, it has been part of the Althorpe Islands Conservation Park.
Troubridge Hill is a hill on the south coast of Yorke Peninsula in South Australia located in the locality of Honiton about 13.5 kilometres south west of Edithburgh and about 3.8 kilometres west of Troubridge Point. It was discovered, reported as being a ’hummock upon this low part ’ and named by Matthew Flinders on 24 March 1802 after Sir Thomas Troubridge, 1st Baronet. Since 1980, it has been the site of an operating lighthouse known as the Troubridge Hill Lighthouse. Its adjoining coastline borders a protected area of the same name - the Troubridge Hill Aquatic Reserve.
West Cape is a headland located on the west coast of the Yorke Peninsula in South Australia in the gazetted locality of Inneston about 14 kilometres west of the town of Marion Bay. It is the most westerly point of Yorke Peninsula. Since 1970, the headland has been located within the Innes National Park while the waters adjoining its shoreline have been located within the Southern Spencer Gulf Marine Park since 2012. Since 1980, it has been the site of a navigation aid in the form of a lighthouse.
Sultana Point is a locality in the Australian state of South Australia located on the Yorke Peninsula immediately adjoining the western head of Gulf St Vincent about 80 kilometres west of the state capital of Adelaide.
Troubridge Island Lighthouse is a decommissioned lighthouse in the Australian state of South Australia located on Troubridge Island in Gulf St Vincent about 74 kilometres southwest of the state capital of Adelaide and about 8 kilometres (5.0 mi) southeast by east of Edithburgh on Yorke Peninsula.
Hardwicke Bay is a bay in the Australian state of South Australia located on the west coast of Yorke Peninsula in Spencer Gulf.
Honiton is a locality in the Australian state of South Australia located on the south coast of Yorke Peninsula immediately adjoining Investigator Strait about 89 kilometres west of the state capital of Adelaide and about 5 kilometres west of the Edithburgh town centre.
Coobowie Aquatic Reserve is a marine protected area in the Australian state of South Australia located in the waters of Gulf St Vincent adjoining the east coast of Yorke Peninsula. It is located partly within the locality of Coobowie and partly within a bay called Salt Creek Bay within the gulf.
Troubridge Hill Aquatic Reserve is a marine protected area in the Australian state of South Australia located in Investigator Strait adjoining the south coast of Yorke Peninsula at the headland of Troubridge Hill.
