76 – Japanese Subs in Sydney Harbour

When the Japanese entered the Second World War at the end of 1941, the impact on Australia was almost immediate. Singapore fell and a great many Australians were taken prisoner. Darwin & later other northern centres were bombed, and at the end of May Japanese midget Submarines made their way into Sydney Harbour. This episode looks at how that attack unfolded.

(77 mins)



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Japanese attack on Darwin Harbour, 1942. (Image: Wikipedia)
Japanese attacks around Australia (AWM)
Midget submarine tracks in in Sydney Harbour. (https://seapower.navy.gov.au/imperial-japanese-navy-midget-submarine-attack-sydney-harbour)
Japanese M24 (https://www.ww2australia.com.au/)
Boom net after completion
(https://www.awm.gov.au/articles/blog/harbour-defence-system)
(P. Gill p79  https://www.awm.gov.au/collection/C1417378)
Kuttabul (https://www.dva.gov.au/news/latest-stories/80th-anniversary-midget-submarine-attack-sydney-during-second-world-war)

Recovery of M27 – Chuman sub – from western channel. (https://seapower.navy.gov.au/imperial-japanese-navy-midget-submarine-attack-sydney-harbour)

Midget submarines recovered (SLV H98.104-898)
Midget Sub on public tour. (State Library of Victoria Pictures Collection H98.104-898) https://seapower.navy.gov.au/imperial-japanese-navy-midget-submarine-attack-sydney-harbour
Midget sub on AWM lawns 1958 (Jack Bain)
Unexploded torpedo Garden Island (RAN) https://navalinstitute.com.au/suppressed-scandal-of-sydney-1942/
CGI model of M24 on seabed when it first sank (Image Animax Films) Found November 2006 (http://www.environment.nsw.gov.au/maritimeheritageapp/resources/Maritime/documents/444f8a6d2558d45bd98e5365564c3b840.pdf)
Intact M24 midget submarine on seabed (Image No-Frills Divers) http://www.environment.nsw.gov.au/maritimeheritageapp/resources/Maritime/documents/444f8a6d2558d45bd98e5365564c3b840.pdf

Podcast Recommendation: 

Australian Naval History Podcast.

(UNSW Canberra & Australian Naval Institute).

S1E1 – Midget Submarines – The Attack On Sydney Harbour.  Available from: https://www.youtube.com/watch?v=xU7DVzZpM98


REFERENCES  –  Ep 76

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GILL, H. Volume II – Royal Australian Navy, 1942–1945 (1st edition, 1968). . Online. Available from: www.awm.gov.au/collection/C1417314 [Accessed March 2025].

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STANLEY, PETER, 2002. “He’s (not) coming south” Chapter 2. In: “Remembering 1942”. Australian War Memorial. 1 June 2002. Available from: http://ajrp.awm.gov.au/ajrp/ajrp2.nsf/WebI/Chapters/%24file/Chapter2.pdf

HERITAGE BRANCH, NSW DEPARTMENT OF PLANNING (23 APRIL 2009). PRIVATE RECOLLECTIONS OF ‘THAT NIGHT.

[HERITAGE NSW], 2020. The raid – Sydney 31 May 1942. Available from: https://www.heritage.nsw.gov.au/about-our-heritage/feature-wreck-m24-midget-submarine/the-raid-sydney-31-may-1942/ [Accessed June 2021].

[HERITAGE NSW], 2020. M24 wreck detective.  Available from: https://www.heritage.nsw.gov.au/about-our-heritage/feature-wreck-m24-midget-submarine/a-chance-discovery/m24-wreck-detective/ [Accessed June 2021].

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LIND, LEW, 1990. The midget submarine attack on Sydney. Garden Island NSW: Bellrope Press. ISBN 0-646-01230-4.

NATIONAL ARCHIVES OF AUSTRALIA. Japanese midget submarine attacks on Sydney, 1942 (Fact sheet 192). Accessed March 2025: https://www.naa.gov.au/sites/default/files/2020-05/fs-192-japanese-midget-submarine-attacks-on-sydney-1942.pdf

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STANLEY, PETER, 2008. Invading Australia: Japan and the battle for Australia, 1942. Camberwell, Vic.: Viking Australia. ISBN 978-0-670-02925-9.

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NSW ENVIRONMENT, ENERGY AND SCIENCE. Japanese Midget Submarine M24. . Japanese Midget Submarine M24.  Available from: https://www.environment.nsw.gov.au/maritimeheritageapp/ViewSiteDetail.aspx?siteid=4 [Accessed April 2025].

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WIKIPEDIA: BOMBING OF DARWIN.  Available from: https://en.wikipedia.org/w/index.php?title=Bombing_of_Darwin&oldid=1272141812 [Accessed February 2025].

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Rough transcript: