Indicator Loops and Anti-submarine Harbour Defence in Australia in WWII

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Author(s)
Walding, Richard
Griffith University Author(s)
Year published
2006
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Methods of detecting submarines have been many and varied but one which rose to prominence in World War Two was based on sensing the magnetic field of a vessel as it passed over conducting cables laid on the seabed. Such 'indicator loop' technology was founded on the work of the scientist Thomas Faraday in the 1800s but developments by the British Admiralty before and during the Second World War saw it reach its zenith and then disappear almost as soon as the war finished. Indicator loops have been classified as secret all of their working life and only a small number of men - and women - knew of their existence. This ...
View more >Methods of detecting submarines have been many and varied but one which rose to prominence in World War Two was based on sensing the magnetic field of a vessel as it passed over conducting cables laid on the seabed. Such 'indicator loop' technology was founded on the work of the scientist Thomas Faraday in the 1800s but developments by the British Admiralty before and during the Second World War saw it reach its zenith and then disappear almost as soon as the war finished. Indicator loops have been classified as secret all of their working life and only a small number of men - and women - knew of their existence. This article surveys the history of its development particularly as an outgrowth of controlled mining and focuses on the Royal Australian Navy's Operation 'Robert and Arthur' in Moreton Bay as a case study in its deployment. An examination is made of the different backgrounds of several men and how this may have shaped their personalities before coming together for two years at Bribie Island. Comment is made on how social needs drove the science and technology behind this anti-submarine technology.
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View more >Methods of detecting submarines have been many and varied but one which rose to prominence in World War Two was based on sensing the magnetic field of a vessel as it passed over conducting cables laid on the seabed. Such 'indicator loop' technology was founded on the work of the scientist Thomas Faraday in the 1800s but developments by the British Admiralty before and during the Second World War saw it reach its zenith and then disappear almost as soon as the war finished. Indicator loops have been classified as secret all of their working life and only a small number of men - and women - knew of their existence. This article surveys the history of its development particularly as an outgrowth of controlled mining and focuses on the Royal Australian Navy's Operation 'Robert and Arthur' in Moreton Bay as a case study in its deployment. An examination is made of the different backgrounds of several men and how this may have shaped their personalities before coming together for two years at Bribie Island. Comment is made on how social needs drove the science and technology behind this anti-submarine technology.
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Journal Title
Journal of Australian Naval History
Volume
3
Issue
1
Copyright Statement
© The Author(s) 2006. The attached file is posted here with permission of the copyright owner for your personal use only. No further distribution permitted. For information about this journal please refer to the publisher's website or contact the author.
Subject
Historical Studies