page_title: Sydney Harbour defences
hierarchical_section_title: Sydney Harbour defences
caption_attribution_description: English: Middle head fort in Mosman, New South Wales
context_page_description: Sydney Harbour was protected by coastal batteries and other fixed defences from the early 19th century until the 1960s. These defences were constructed to protect the Australian city of Sydney from attack by enemy warships and submarines.
context_section_description: Sydney Harbour was protected by coastal batteries and other fixed defences from the early 19th century until the 1960s. These defences were constructed to protect the Australian city of Sydney from attack by enemy warships and submarines.
caption: Gun emplacements overlooking Sydney Heads & Watsons Bay
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