Telegraph Cables – most important laid

A selection of some of the most important cables made by the Company

1850 Brett & Co. 25 Anglo-French. Dover-Calais.
1851 Wilkinson & Weatherby 27 Anglo-French. Dover-Calais.4-core armoured.

1855 Newall & Co 310 & 60 Black Sea. Varna-Balaklava,
Balaklava-Eupatoria Crimean War Cable. Required in haste, so only shore ends Armoured.

1855 Atlantic Telegraph Co.2036 Atlantic. Ireland-Newfoundland. First Atlantic Cable. 1274 nauts laid when the end was lost in deep water. In 1866 the 1865 cable was completed and the new one successfully laid.
1865 Anglo-American Telegraph Co.1214 Atlantic. Ireland towards Newfoundland.As above
1866 Anglo-American Telegraph Co.2538 Atlantic Ireland-Newfoundland. As above
1870 Eastern Telegraph Co.3268 Suez-Aden-Bombay, Linking the Empire.
1870 Eastern Telegraph Co 3180 Cornwall-Gibraltar-Malta Alexandria. As above
1870 Eastern Extension Telegraph Co.2366 Madras-Penang-Singapore. As above
1871 Eastern Extension Telegraph Co. 1596 Singapore-Hong Kong.As above
1874 Brazilian Submarine Telegraph Co 3041 Brazil (Pernambuco) via Madeira & St. Vincent. First cable across the South Atlantic.
1876 Eastern Extension Telegraph Co. 1283 Australia-New Zealand. Extension of Empire Cable links.
1877 Eastern Extension Telegraph Co 853 Rangoon-Penang.
As above
1877 Eastern Telegraph Co 1889 Aden-Bombay. As above
1879 Eastern & South African Telegraph 3852 East coast of Africa. Durban – Delagoe- Mozambique – Zanzibar- Aden. As above
1886 African Direct Telegraph Co 2078 West coast of Africa. Bathurst – Sierra Leone-Accra- Lagos- Brass-Bonny. Cape Town. As above
1889 Eastern & South African Telegraph Co. 1584 Cape Town – Nolloth-Mossamedes. As above
1889 Eastern Telegraph Co.2679 Cables between Cornwall and Cape Town using the islands off the west coast of Africa Boer War Cables
1900 Eastern Telegraph Co.1775 Cables between Cornwall and Cape Town using the islands off the west coast of Africa As above
1901 Eastern Telegraph Co 2431 Cables between Cornwall and Cape Town using the islands off the west coast of Africa. As above
1902 Pacific Cable Board 6482 Pacific ‘All Red’ route Canada to Australia and New Zealand Known as ‘All Red’ route because all receiving and transmitting stations in the chain were on British territory. It contained the largest uninterrupted length of sub-marine cable in the world. Vancouver (Canada)—Fanning Island, 3500 nautical miles in the Pacific Ocean.

1902 Pacific Cable Board 836 Link to Australia from Norfolk Island As above
1902 Pacific Cable Board 519 Link to New Zealand from Norfolk Island As above
1903 Commercial Pacific Cable Co. 5570 West America to American Philippine Islands. This connected America with China.

1912 H.M. Post Office & French Government 23 Dover Straits First important * continuously loaded’ telephone cable.

1921 Cuban American Telephone & Telegraph Co. 310 Florida-Cuba. three telephone cables. Using for the first time a return conductor—’ Coaxial Cables’.

1925 Italcable Co.1337 Spain- Azores. First orders from Italy
1925 Italcable Co. 1203 & 200 Rio de Janeiro-Montevideo-Buenos Aires. As above
1926 Pacific Cable Board. 3467 Vancouver-Fanning Island (Pacific Ocean). Mumetal loaded cable across the longest submarine span.
1929 Italcable Co 1134 Belgium-Portugal. First loaded Italian cable
1937 H.M. Post Office & Dutch Government. 2 x 81 Anglo-Dutch Two ‘Coaxial’ Telephone cables using Paragutta as dielectric
1938 French Government 1350 Mediterranean cable A strategic cable when war was threatened
1947 H.M. Post Office. 200 Anglo-German military cable Telcothene core with submersible repeaters inserted
1947 H.M. Post Office & Dutch Government. 81 Anglo-Dutch Air space core with a diameter of 1.7 inch. Capable of carrying 84 speech channels.
1950 Dutch and Danish Governments 2×142 Holland-Denmark. Solid telcothene core each cable containing two repeaters for telephone working.
1950 Great Northern Telegraph Co 322 England- Denmark Being manufactured. Telcothene core containing repeaters,. High speed telegraph cable.
Beside the three Atlantic cables mentioned (1858, 1865, 1866), others were made in 1869 (French), 1873, 1874 1880, 1894 (high speed due to large conductor) 7900 7905 797Ci 7925 (higher speed by further increasing the size of conductor), 7924 (Permalloy tape, -continuous loading speed
5500 words per minute: four times that of any other Atlantic cable), 7926, 7925 (Mumetal used and by varying the weight of loading-tapered loading—a further increase up to 70-72 times that of any unloaded cable was achieved).

• After 1935 all submarine cables were made at Telcon Works, Greenwich, by Submarine Cables Limited, which is jointly owned by the Company and Siemens Bros.

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