HMAS Cerberus is the Royal Australian Navy

Royal Australian Navy

The Royal Australian Navy is the naval branch of the Australian Defence Force. Following the Federation of Australia in 1901, the ships and resources of the separate colonial navies were integrated into a national force: the Commonwealth Naval Forces...

's primary training establishment, located adjacent to Crib Point

Crib Point, Victoria

Crib Point is a suburb in Melbourne, Victoria, Australia, as a part of the urban enclave on Western Port comprising Bittern, Crib Point, Hastings, Tyabb, and Somerville...

 on the Mornington Peninsula

Mornington Peninsula

The Mornington Peninsula is a peninsula located south-east of Melbourne in Victoria, Australia. It is surrounded by Port Phillip to the west, Western Port to the east and Bass Strait to the south, and is connected to the mainland in the north. Geographically, the peninsula begins its protrusion...

, south of Melbourne

Melbourne

Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

, Victoria

Victoria (Australia)

Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

, Australia. It is also an official bounded locality of the Shire of Mornington Peninsula

Shire of Mornington Peninsula

The Shire of Mornington Peninsula is a Local Government Area in Victoria, Australia. It is located to the south of the city of Melbourne on the Mornington Peninsula. It has an area of 723 square kilometres...

. At the 2006 census

Census in Australia

The Australian census is administered once every five years by the Australian Bureau of Statistics. The most recent census was conducted on 9 August 2011; the next will be conducted in 2016. Prior to the introduction of regular censuses in 1961, they had also been run in 1901, 1911, 1921, 1933,...

, HMAS Cerberus had a population of 1,151.
The site for the Cerberus naval base on Hanns Inlet, between Sandy Point and Stony Point on Western Port Bay

Western Port

Western Port, is sometimes called "Western Port Bay", is a large tidal bay in southern Victoria, Australia opening into Bass Strait. It is the second largest bay in Victoria. Geographically, it is dominated by the two large islands; French Island and Phillip Island. Contrary to its name, it lies to...

 was purchased in 1911. The 15 square kilometres (5.8 sq mi) base was opened in September 1920 and became known as Flinders Naval Depot in 1921.