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Attack on Sydney Harbour, Australia

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90 Stores Lane
Potts Point NSW 2011
Australia

Potts Point, Australia Print route » S33° 51' 30" E151° 13' 60"   (-33.858333333333, 151.23333333333) Start navigation »

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In late May and early June 1942, during World War II, submarines belonging to the Imperial Japanese Navy made a series of attacks on the cities of Sydney and Newcastle in New South Wales, Australia. On the night of 31 May – 1 June, three Ko-hyoteki-class midget submarines, each with a two-member crew, entered Sydney Harbour, avoided the partially constructed Sydney Harbour anti-submarine boom net, and attempted to sink Allied warships. Two of the midget submarines were detected and attacked before they could successfully engage any Allied vessels, and the crews scuttled their boats and committed suicide. These submarines were later recovered by the Allies. The third submarine attempted to torpedo the heavy cruiser USS Chicago, but instead sank the converted ferry HMAS Kuttabul, killing 21 sailors. This midget submarine's fate was unknown until 2006, when amateur scuba divers discovered the wreck off Sydney's northern beaches.
Immediately following the raid, the five Japanese fleet submarines that carried the midget submarines to Australia embarked on a campaign to disrupt merchant shipping in eastern Australian waters. Over the next month, the submarines attacked at least seven merchant vessels, sinking three ships and killing 50 sailors. During this period, between midnight and 02:30 on 8 June, two of the submarines bombarded the ports of Sydney and Newcastle.
The midget submarine attacks and subsequent bombardments are among the best-known examples of Axis naval activity in Australian waters during World War II, and are the only occasion in history when either city has come under attack. The physical effects were minimal: the Japanese had intended to destroy several major warships, but sank only an unarmed depot ship, caused minimal damage to Allied shipping, and failed to damage any significant targets during the bombardments. The main impact was psychological; creating popular fear of an impending Japanese invasion and forcing the Australian military to upgrade defences, including the commencement of convoy operations to protect merchant shipping.

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