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From Wikipedia, the free encyclopedia

All Red Line.jpg

The All Red Line was an informal name for the system of electrical telegraphs that linked much of the British Empire. It was inaugurated on 31 October 1902. The name derives from the common practice of colouring the territory of the British Empire red or pink on political maps.


The first transatlantic cable connected Ireland and Newfoundland in 1858, although it later failed.[1][2] In 1866, the SS Great Eastern laid out a lasting link from Valentia Island, in Ireland, to Newfoundland.[3] By 1870, Suez was linked to Bombay and from there to Madras, Penang and Singapore. Australia was linked to British telegraph cables directly in 1871, by extending a line from Singapore to Port Darwin, although it ran through the Dutch territory of Java.[4] By 1872, messages could be sent direct from London to Adelaide and Sydney. Australia was linked to New Zealand by cable in 1876.

To complete the All Red Line, therefore, the final major cable laying project was the trans-Pacific section. A resolution supporting such a project was passed by the First Colonial Conference in 1887 and more detailed plans were approved at the 1894 Colonial Conference in Ottawa which was called specifically on the topic of the cable project. The "Pacific Cable Committee" was formed in 1896 to consider the proposal and in 1901 the Pacific Cable Board was formed with eight members: three from Britain, two from Canada, two from Australia and one from New Zealand. Funding for the project was shared between the British, Canadian, New Zealand, New South Wales, Victorian and Queensland governments. In 1902 the Colonia, a newly built cable vessel, began laying the 8,000 tonnes of cable needed to complete the Bamfield, British Columbia, to Fanning Island section of the cable. The final cost was around £2 million.

Originally, the British government felt the All Red system should have sea-landings only on British-controlled soil for security purposes. Due to this, Britain was actively seeking to acquire Fanning Island to use it as a midpoint of power regeneration between Western Canada and Australia on the trans-Pacific Ocean branch of the system, and it was annexed in 1888.

In 1911 the Committee on Imperial Defence stated in a report that the All Red Line was complete. The network had so many redundancies that 49 cuts would be needed to isolate the United Kingdom; 15 for Canada; and 5 for South Africa. Many colonies such as South Africa and India also had many land lines. Britain also possessed the majority of the world's underwater-telegraph deployment and repair equipment and expertise, and a monopoly of the gutta-percha insulation for underwater lines. The 1911 report stated that the Imperial Wireless Chain should only be a "valuable reserve" to the All Red Line, because enemies could interrupt or intercept radio messages. Despite its great cost the telegraph network succeeded in its purpose; British communications remained uninterrupted during the First World War, while Britain quickly succeeded in cutting Germany's worldwide network.[5]

The Pacific Cable Board laid a duplicate cable between Canada and New Zealand between 1923 and 1926 using the cable laying ships Dominia and Faraday.[6]


Atlantic Ocean

Pacific Ocean

Indian Ocean

Commonwealth Telegraph Agreement

In the final years of the British Empire, with a number of states federated or close to independence, a treaty with clearer financial divisions, responsibilities, and governance was established that would eventually replace the Pacific Cable Board. A treaty Commonwealth Telegraph Agreement was signed between Commonwealth nations in London, 1948 that formed the Commonwealth Telecommunications Organisation.[7]

See also


  1. ^
  2. ^
  3. ^
  4. ^ "1871 Java - Port Darwin Cable". History of the Atlantic Cable & Undersea Communications. 2014-11-05. Retrieved 2015-01-03.
  5. ^ Kennedy, P. M. (October 1971). "Imperial Cable Communications and Strategy, 1870-1914". The English Historical Review. 86 (341): 728–752. doi:10.1093/ehr/lxxxvi.cccxli.728. JSTOR 563928.
  6. ^ "Local And General News". New Zealand Herald. 1926-11-17. p. 12. Retrieved 2016-01-01.
  7. ^ "The CTO – a brief history | CTO: Commonwealth Telecommunications Organisation". Commonwealth Telecommunications Organisation. Retrieved 19 June 2017.

External links

This page was last edited on 17 July 2020, at 13:44
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