History of the Atlantic Cable & Submarine Telegraphy

	History of the Atlantic Cable & Undersea Communications from the first submarine cable of 1850 to the worldwide fiber optic network
Cable Timeline: 1901-1950 by Bill Glover

Click on the Route links to see cable samples, the Company or Operator links for full descriptions, the ship name links to see descriptions or images. Atlantic cables and their connecting systems are highlighted in green. Please note that Timeline entries within each year are not necessarily chronological, as the exact date of laying is generally not known.
Year	Route	Manufacturer	Company or Operator	Cable Ships	Notes
1901	Tschifu - Taku	Felten & Guillaume	German PTT	Von Podbielski
1901	St Vincent, Cape Verde Islands - Madeira	Telcon	Eastern Telegraph Co	Anglia - Britannia (2)	System 1130 nm
1901	Porthcurno, England - Madeira	Telcon	Eastern Telegraph Co	Anglia - Britannia (2)	System 1375 nm
1901	Ascension - Sierra Leone	Telcon	Eastern Telegraph Co	Anglia	System 1125 nm
1901	Bacton - Borkum - Emden 3	Norddeutsche Seekabelwerke	GPO	Von Podbielski
1901	Java - Bandjermasin	Telcon	Dutch East Indies Government	Seine	System 284 nm.
1901	Zante - Patros No 3	Telcon	Eastern Telegraph Co	Chiltern
1901	Patras - Corinth No 3	Telcon	Eastern Telegraph Co	Chiltern
1901	Kalamaki - Piraeus No 3	Telcon	Eastern Telegraph Co	John Pender (2)
1901	Piraeus - Syra No 3	Telcon	Eastern Telegraph Co	John Pender (2)
1901	Azores - Waterville, Ireland	Siemens Bros	Commercial Cable Co	Faraday (1)	System 1204 nm.
1901	Waterville, Ireland - Weston super Mare, England	Telcon	Commercial Cable Co	Anglia
1901	Nova Scotia - St Pierre - Bay Roberts	Telcon	Commercial Cable Co	Scotia - Anglia
1901	Jask - Muscat	Siemens Bros	Indian Government	Patrick Stewart (1)
1901	Durban, South Africa - Mauritius	Telcon	Eastern Telegraph Co	Anglia
1901	Mauritius - Rodriguez Is - Cocos (Keeling) Islands	Telcon	Eastern Extension Australasia & China Telegraph Co	Anglia	System 407 + 2157 nm. WFS 1966.
1901	Cocos (Keeling) Islands - Cottesloe, Perth, Australia - Adelaide, Australia	Telcon	Eastern Extension, Australasia & China Telegraph Co	Scotia - Britannia (2)	System 1721 + 1525 nm. Britannia laid 130 nm of cable from Adelaide to just off Kangaroo Island consisting of the shore end and intermediate cable. WFS 1948. C&W recovered part of this cable between Cottesloe and Cocos during 1986.
1901	St Vincent, Cape Verde Islands - Fayal, Azores	Telcon	Western Telegraph Co	Colonia
1901	Suruga Kure - Yanagihara Shikoku, Japan	?	Japanese Government	?	System 36 km. Four conductors insulated with gutta percha
1901	Tanigawa Kagoshima - Ohama, Japan	?	Japanese Government	?	System 48½ km. Single conductor insulated with gutta percha
1902	Tourane, French Indo China - Amoy, China	La Société Générale des Téléphones - A Grammont	French PTT	Francois Arago	Monsieur A Grammont manufactured the two shore ends of 8 & 10 nm, La Société manufactured 91 nm of intermediate cable and 700 nm of deep sea cable
1902	Bamfield, Canada - Fanning Island	Telcon	Pacific Cable Board	Colonia	System 3459 nm. Laid October 1902.
1902	Fanning Island - Suva, Fiji	Telcon	Pacific Cable Board	Anglia	System 2046 nm
1902	Suva, Fiji - Anson Bay, Norfolk Island	Telcon	Pacific Cable Board	Anglia	System 980 nm. WFS 1964
1902	Anson Bay, Norfolk Island - Southport, Australia	Telcon	Pacific Cable Board	Anglia	System 837 nm. WFS 1964.
1902	Anson Bay, Norfolk Island - Doubtless Bay, New Zealand	Telcon	Pacific Cable Board	Anglia	System 519 nm. Diverted into Takapuna Beach, Auckland in 1912. WFS 1964.
1902	Lagos, Nigeria - Cotonou, Dahomey	Telcon	African Direct Telegraph Co	John Pender (2)
1902	Bathurst, Gambia - Bissau, French Guinea	Telcon	West African Telegraph Co	John Pender (2)
1902	St Margarets Bay, England - La Panne, Belgium 2	Siemens Bros	GPO	Alert (1)	Telephone cable
1902	Trecastell (near Rhosneigr, Isle of Anglesey) - Howth (Ireland) No 2	?	GPO	?
1902	Elsinore, Denmark - Helingsborg, Sweden	?	Danish PTT	?	First continuously loaded cable for Danish PTT
1902	Fehmarn Island, Germany - Laaland Island, Denmark	Felten & Guilleaume	?	?	Continuously loaded cable
1902	San Francisco - Honolulu	India Rubber Gutta Percha & Telegraph Works	Commercial Pacific Cable Co	Silvertown	System 2277 nm.
1902	Muroeki, Yamaguchi-ken - Kumage, Ohita-ken, Japan	?	Japanese Government	?	System 39.4 km. Triple conductor insulated with gutta percha
1902	Kouzuhana Izu - Ohshima, Japan	?	Japanese Government	?	System 41.4 km. Single conductor insulated with gutta percha
1903	Honolulu - Midway - Guam - Manila, Philippines	Telcon	Commercial Pacific Cable Co	Colonia - Anglia	System 1336 + 2656 + 1642 nm
1903	Balikpapan - Kwandong	Telcon	Dutch East Indies Government	Patrol - Restorer	System 650 nm.
1903	Sitka - Juneau, Alaska	?	US Army Signal Corps	Burnside	System 291 nm.
1903	Bamfield - Port Alberni	Telcon	Pacific Cable Board	HMCS Iris (1)	Laid to replace the landline between these two points, which was frequently interrupted by falling trees and branches.
1903	Greetsiel - Borkum - Azores	Norddeutsche Seekablewerke	German Submarine Telegraph Co	Stephan - Von Podbielski	Diverted into Brest in 1917 for use by the French PTT.
1904	Azores - New York	Norddeutsche Seekablewerke	German Submarine Telegraph Co	Stephan - Von Podbielski	Diverted into Halifax, Nova Scotia in 1917 by Colonia. Operated by the GPO until 1929 then by Cable & Wireless.
1904	Sitka, Alaska - Seattle	?	US Army Signal Corps	Burnside	System 1070 nm.
1904	Sitka- Valdez, Alaska	?	US Army Signal Corps	Burnside	System 640 nm.
1904	Sasebo, Japan - Dairen, Manchuria	?	Japanese Government	?	System 225 km. Single conductor insulated with gutta percha
1904	Sotohama - Kyosaitou Island - Urushibara Peninsula, Japan	?	Japanese Government	?	System 147.4 km. Single conductor insulated with gutta percha
1904	Sumijima, Yamaguchi-ken - Okinoshima - Tsushima, Japan	?	Japanese Government	?	System 159.4 km. Single conductor insulated with gutta percha
1904-5	Various	?	Japanese Military	?	Many cables were laid following the outbreak of the Russo-Japanese War.
1905	Santiago, Chile - Cienfuegos	?	Cuba Submarine Telegraph Co	?
1905	Marseilles, France - Barcelona, Spain	Telcon	Direct Spanish Telegraph Co	?
1905	France - Senegal	?	French PTT	?	System 2847 nm.
1905	Constanza, Roumania - Constantinople, Turkey	Norddeutsche Seekabelwerke	Eastern European Telegraph Company	Von Podbielski
1905	Balikpapan - Macassar	Norddeutsche Seekabelwerke	Dutch East Indies Government	Von Podbielski	375 nm.
1905	Menado - Yap - Guam	Norddeutsche Seekabelwerke	German-Netherland Telegraph Co	Stephan	System 5000 nm including entry below. Diverted to Palau by Japanese in 1942
1905	Yap - Shanghai, China	Norddeutsche Seekabelwerke	German-Netherland Telegraph Co	Stephan	Cable cut by the Japanese in 1916 and diverted to Okinawa
1905	Canso, Nova Scotia - Waterville, Ireland - Weston super Mare, England	Telcon	Commercial Cable Co	Colonia - Anglia - Cambria - Mackay Bennett	Colonia laid the Canadian end of the cable, and during the laying ran aground on Fox Island off Nova Scotia. To enable Colonia to be floated off, the cable was transferred to the Mackay Bennet. Colonia then sailed to Halifax for repairs. Anglia laid the eastern end. In 1926 this cable and the 1894 cable were diverted into Quidi Vidi Harbour by CS John W. Mackay
1905	Galveston - Coatzacoalcos	Siemens Bros	Mexican Telegraph Co	Faraday (1)	System 674 nm.
1905	Kawasaki - Chichijima, Japan	?	Japanese Government	?	First section of Japan - Bonin Island cable
1905	Enbetsu, Hokkaido - Toro Karafuto, Japan	?	Japanese Government	?	System 100.9 km. Single conductor insulated with gutta percha
1905	Sakanoshita Wakkanai, Japan - Alexandrovsk, Russia	?	Japanese Government	?	System 687.1 km. Single conductor insulated with gutta percha
1905	Matsue - Utsuryoutou - Gensan, Japan	?	Japanese Government	?	System 866.4 km. Single conductor insulated with gutta percha
1905	Poulo Condor, French Indo China - Pontianak, Borneo, Dutch East Indies	La Société Générale des Téléphones - A Grammont	French PTT	Francois Arago
1905-6	Tamatave, Madagascar - St Dennis, Reunion - Port Louis, Mauritius	La Société Générale des Téléphones - A Grammont	French PTT	Francois Arago	System 1030 nm.
1906	Valparaiso - Iquique, Chile - Chorillos, Peru	Siemens Bros	Central & South American Telegraph Co	Faraday (1)	System 1797 nm.
1906	River Plate	Hoopers Telegraph Works	River Plate Telegraph Co	Cormorant (1)
1906	Guam - Bonin Island	Siemens Bros	Commercial Pacific Cable Co	Urmston Grange	System 975 nm.
1906	Manila - Shanghai	India Rubber Gutta Percha & Telegraph Works	Commercial Pacific Cable Co	Silvertown - Store Nordiske (1)
1906	Porthcurno, England - Fayal, Azores	Telcon	Europe & Azores Telegraph Co	Colonia
1906	St Vincent Cape Verde Islands - Fayal, Azores	Telcon	Western Telegraph Co	Colonia	System 1467 nm
1906	Shetlands - Faroes - Iceland	Telcon	Great Northern Telegraph Co	Cambria	System 219 + 316 nm.
1906	Germany - Norway	Norddeutsche Seekabelwerke	German & Norwegian PTT	Stephan
1906	Lake Constance	Siemens & Halske	?	?	Lump loaded cable
1906	Milo - Kimolo	Telcon	Greek Government - Eastern Telegraph Co	Levant I
1906	Kawasaki - Chichijima Ogasawara, Japan	?	Japanese Government	Jyuuzou Maru	System 1235.9 km. Single conductor insulated with gutta percha. Landing moved to Koshinakajima Arakawa in December 1906
1906	Chichijima Ogasawara - Hahajima, Japan	?	Japanese Government	?	System 72.4 km. Single conductor insulated with gutta percha
1906	Ohshima - Nijima - Miyakejima - Hachijyojima, Japan	?	Japanese Government	?	System 252.8 km. Single conductor insulated with gutta percha
1907	New York - Havana, Cuba	India Rubber Gutta Percha & Telegraph Works	Commercial Cable Company of Cuba	Silvertown	System 1288 nm. Leased to All America Cables.
1907	Moen, Denmark - Leipaja - St Petersburg, Russia	Norddeutsche Seekabelwerke	Great Northern Telegraph Co	Stephan	System 904 nm.
1907	Varna - Sebastopol	Siemens Bros	Russian Government	Faraday (1)	System 305 nm.
1907	Durban - Mozambique	Telcon	Eastern & South African Telegraph Co	Colonia
1907	New York - Fisherman's Point, Cuba - Colon, Panama	Telcon	Central & South American Telegraph Co	Colonia	System 1542 + 787 nm. Laid June 1907.
1907	Imaji Shikoku - Ohshima - Hakatajima - Daisanjima - Ikukoujima, Japan	?	Japanese Government	?	System 18.3 km. Single conductor insulated with gutta percha
1907	Isono Aomori - Ohmorihama Hakodate, Japan	?	Japanese Government	?	System 108.8 km. Single conductor insulated with gutta percha
1907	Sakharin - Nayoro - Maoka - Kaibashima, Japan	?	Japanese Government	?	Single conductor insulated with gutta percha
1908	Trieste - Pola - Sebenike	Norddeutsche Seekabelwerke	Italian PTT	Stephan
1908-11	Borkum - Tenerife - Monrovia - Pernambuco	Norddeutsche Seekabelwerke	German South American Telegraph Co	Stephan	System 5000 nm.
1908	Tschifu - Dairen	?	Japan - ICT	?	Japan laid a cable from Dairen to within 7½ miles (13 km) of Tschifu, the Imperial Chinese Telegraph (ICT) laid the remaining 7½ miles of cable to Tschifu. Each operated its own section of the cable.
1908	Cadiz - Tenerife	Telcon	Spanish PTT	Colonia	Colonia also laid six inter island cables
1908	Seabrook, England - Audresselles, France	Siemens Bros	GPO	?
1908	Seabrook, England - Le Portel, France	Siemens Bros	GPO	?
1908	Cocos - Batavia	Telcon 784 nm	Eastern Extension, Australasia & China Telegraph Co	Patrol
1908	Naruto - Seto, Japan	?	Japanese Government	?	System 0.6 km. Single conductor insulated with gutta percha
1908	Soubiraki - Shisakajima, Japan	?	Japanese Government	?	System 18.8 km. Double conductor insulated with gutta percha
1909	Flinders, Victoria - Low Head, Tasmania	Siemens Bros	Federal Post Office	Faraday (1)	Two cables were laid and were known as "East"and "West" cables. They were brought into service on 1 May 1909. In 1943 using the steamship SS Mernoo these two cables were recovered and laid between Cape York, Queensland and Delena, New Guinea for use by Australian Military Forces engaged in driving the Japanese out of New Guinea
1909	St. John's, Newfoundland - New York	Telcon	Commercial Cable Co	Colonia	Provided a direct link to New York for the 1884 cable diverted in 1909
1909	Dailian - Shibaso, Japan	?	Japanese Government	?	System 166.1 km. Single conductor insulated with gutta percha
1909	Takei Kagawaken - Azukijima, Japan	?	Japanese Government	?	System 10.1 km. Double conductor insulated with gutta percha
1910	St. John's, Newfoundland - New York	Telcon	Commercial Cable Co	Colonia	Provided a direct link to New York for the 1884 cable diverted in 1910
1910	Waterville, Ireland - Weston super Mare, England	?	Commercial Cable Co	?
1910	St Vincent, Cape Verde Islands - Ascension - Buenos Aires	Telcon	Western Telegraph Co	Colonia - Cambria	System 1975 + 3145 nm. The span from Ascension to Buenos Aires was the second longest telegraph cable laid. CS Cambria laid 300 nm of deep sea cable with CS Colonia laying the rest. First direct cable from Argentina to Europe, inaugurated May 1910 (source: commemorative medal at NMM)
1910	River Plate	Telcon	Western Telegraph Co	Cormorant (2)	CS Cormorant (2) laid all the cable up the River Plate
1910	Bay Roberts, Newfoundland - Sennen Cove, Cornwall, England	Telcon	Anglo American Telegraph Co	Colonia - Telconia
1910	Newbiggin by the Sea, England - Arendal, Norway	Siemens Bros	Norwegian PTT - GPO	Faraday (1)	System 411 nm.
1910	Abbotscliffe - Cap Gris Nez, France No 3	Siemens Bros	GPO	Faraday (1). Alert laid the shore ends; Monarch marked the cable route with buoys..	First lump loaded telephone cable across the Channel
1910	Trieste - Pola - Split	Norddeutsche Seekabelwerke	Italian PTT	Stephan
1910	Conakry, French Guinea - Monrovia, Liberia - Grand Bassam, Ivory Coast	Norddeutsche Seekabelwerke	La Compagnie des Câbles Sud-Américans	Stephan	System 309 + 500 nm.
1910	Shinushigake, Nagasaki-ken - Ohama	?	Japanese Government	?	System 48.8 km. Single conductor insulated with gutta percha
1910	Mogi, Nagasaki-ken, Japan - Danshuei, Taiwan	?	Japanese Government	?	System 1263.1 km. Single conductor insulated with gutta percha
1911	Wood Islands - Prince Edward Island - Pictou, Nova Scotia, Canada	?	Telephone Company of Prince Edward Island	?	System 15 miles of two core telephone cable. Laying was supervised by the Maritime Telegraph and Telephone Company Ltd., and was completed on 1 January 1911. The cable opened for service 3 January 1911
1911	Monrovia - Lome - Douala, German Cameroons	Norddeutsche Seekabelwerke	German South American Telegraph Co	Stephan
1911	Cape Cruz - Cienfuegos	?	Cuba Submarine Telegraph Co
1911	St Margarets Bay, England - La Panne, Belgium No 3	Siemens Bros	GPO	?	System 48 nm. Four-conductor loaded telephone cable insulated with gutta percha
1911	Sweden - Russia	?	Great Northern Telegraph Co	?
1911	Kyobuntou, Japan - Kouyou Peninsula, Korea	?	Japanese Government	?	System 67.4 km. Single conductor insulated with gutta percha
1912	Abbotscliffe (Abbot's Cliff), England - Cap Gris Nez, France 4	Siemens Bros	GPO	Cambria	First continuously loaded four-core telephone cable across the Channel.
1912	Gibraltar - Malta - Alexandria, Egypt	Telcon	Eastern Telegraph Co	Colonia
1912	Bondi Beach, Sydney - Auckland	India Rubber Gutta Percha & Telegraph Works	Pacific Cable Board	Silvertown	System 1225 nm. WFS 1964
1912	Yoshimi, Yamaguchi-ken, Japan - Annam, Korea	?	Japanese Government	?	System 215.7 km. Single conductor with gutta percha insulation
1912	Suma Hyogoken - Kusumoto Awajishima, Japan	?	Japanese Government	?	System 15.2 km. Single conductor with gutta percha insulation
1912	Okinawa - Ishigakijima - Myakojima, Japan	?	Japanese Government	?	System 160.9 km. Single conductor with gutta percha insulation
1912	Tomogashima - Awajishima, Kitan Straits, Japan	?	Japanese Military	?	First lead sheathed cable laid in Japanese waters
1913	Mundesley - Norderney, Germany	Norddeutsche Seekabelwerke	GPO - German PTT	Stephan
1913	Anglo-Irish: Aber Geirch - Howth 1	Siemens Bros	GPO	Monarch (2)	System 64 nm. Four-conductor loaded telephone cable insulated with gutta percha. Completed in December 1913. Aber Geirch is near Nevin/Nefyn, Caernarvon, Wales.
1913	Newbiggin by the Sea, England - Sondervig, Denmark	Siemens Bros	Great Northern Telegraph Co	Silvertown	System 349 nm.
1913	Balboa - Santa Elena	Norddeutsche Seekabelwerke	Central & South American Telegraph Co	Stephan	System 754 nm.
1913	Aden - Colombo, Ceylon	Telcon	Eastern Telegraph Co	Colonia	System 2264 nm.
1913	Penang - Singapore - Hong Kong	Telcon	Eastern Extension, Australasia & China Telegraph Co	Colonia	1523 nm Singapore - Hong Kong section
1913	Balikpapan - Soerabaja - Kema - Ternato	Norddeutsche Seekabelwerke	Dutch East Indies Government	Stephan	System 720 nm.
1913	Dutch East Indies	Siemens Bros	Dutch East Indies Government	Faraday (1)	System 1347 nm.
1913	Victoria - Vancouver	W. T. Henley Telegraph Works Co	British Columbia Telephone Co	Princess Louise
1914	Suez - Aden	Telcon	Eastern Telegraph Co	Colonia	System 1406 nm
1914	St Margarets Bay, England - Dunkirk, France	?	GPO	?
1914	Colombo, Ceylon - Penang, Malaya	Telcon	Eastern Extension, Australasia & China Telegraph Co	Colonia
1914	England - Belgium	Telcon	Socitie Anonyme Belge de Cables Telegraphiques	?
1914	Montevideo - Falkland Islands	Telcon	Western Telegraph Co	Royal Navy	Most of the cable was recovered after the war and used elsewhere
1914	Freetown, Sierra Leone - Accra, Gold Coast	Telcon	African Direct Telegraph Co	Colonia - Transmitter
1914	Mogi, Nagasaki-ken, Japan - Shanghai, China	?	Japanese Military	?	System 871.9 km. Four conductors with gutta percha insulation
1914	Nagasaki, Japan -Tsingtao, China	?	Japanese Military	?	This and the above cable were linked by using the German Shanghai - Tsingtao cable which following the outbreak of WW 1 had been taken over by the Allies.
1915	Chio - Lemnos	Telcon	Eastern Telegraph Co	Levant I
1915	Peterhead, Scotland - Alexandrovsk, Russia	Telcon	GPO	Colonia
1915	New York - Fisherman's Point, Cuba - Colon, Panama	Telcon	Central & South American Telegraph Co	Colonia	System 1542 + 787 nm.
1915	Dardanelles Campaign:- Imbros - Nibrunesi Point, Gallipoli:	?	Allied Military	Levant II	Shore end destoyed prior to evacuation
1915	Dardanelles Campaign:- Tenedos - 'W' Beach, Helles, Gallipoli	?	Allied Military	Levant II	The Eastern Telegraph Co cable Tenedos - Constantinople was cut and diverted to 'W' Beach where ETC staff set up a cable station. Cable became operational on 29th April. Shore end destroyed prior to evacuation.
1915	Dardanelles Campaign	?	Allied Military	Levant II	Cables which had been laid for the Italian-Turkish war of 1911 and then abandoned were recovered and brought into service. Routes unknown.
1915	Dardanelles Campaign:- Suvla Point - Nibrunesi Point (Across Suvla Bay)	?	Allied Military	Levant II	3 D5 cables laid in preparation for the evacuation of Suvla Bay and Anzac Cove. Shore ends subsequently destoyed.
1915	Dardanelles Campaign:- Nibrunesi Point - Corps HQ on board HMS Peony	?	Allied Military	Levant II	Laid in preperation for the evacuation of Suvla Bay and Anzac Cove.
1915	North Sydney, Cape Breton Island - Colinet, Newfoundland	?	American Telegraph & Cable Co		Connected with the 1881-2 cables diverted into Bay Roberts in 1913, 1915. Leased by Western Union
1915	Shanghai - Hozan, China	?	Japanese Military	?	Final link in the Nagasaki - Shanghai cable
1915	Yade, Okayama-ken - Ohme, Kagawa-ken, Japan	?	Japanese Government	?	System 13.1 km. Telephone cable with 4 conductors and rubber insulation
1915	Sasebo, Japan - Tsingtao, China	?	Japanese Military	?	System 983.2 km. Single conductor with gutta percha insulation
1916	Lemnos - Salonika No 2	Telcon	Eastern Telegraph Co	Electra (1) - Levant II
1916	Dungeness, England - Audresselles, France No 1	?	GPO	?
1916	Japanese Coastal Cables		Japanese PTT	Faraday (1)
1916	Yap - Okinawa (Yap - Shanghai)	Norddeutsche Seekabelwerke	Japanese Military	?	1905 German cable cut and diverted to Okinawa
1917	Dover - Dunkirk	?	GPO	?
1917	Dover - Sangatte No 1	?	GPO	?
1917	Cuckmere, England - Le Havre, France No 1	?	GPO	?
1917	Mogi, Nagasaki-ken, Japan - Danshuei, Taiwan	?	Japanese Government	?	System 1292.2 km. Single conductor with gutta percha insulation
1917	Hotei - Penghu, Taiwan	?	Japanese Government	?	System 72.2 km. Single conductor with gutta percha insulation
1918	Cuckmere - Le Havre No 2	?	GPO	?
1918	Dover - Sangatte No 2	?	GPO	?
1918	Dungeness - Audresselles No 2 & 3	?	GPO	?
1918	Valentia, Ireland - Porthcurno, England	Telcon	Western Union Telegraph Co	War Simoon
1918	Murmansk - Archangel	Siemens Bros	Great Northern Telegraph Co	Faraday (1)	System 650 nm.
1919	Porthcurno, England - Gibraltar	Telcon	Eastern Telegraph Co	Stephan
1919	Tenedos - Kephez	Telcon	Eastern Telegraph Co	?
1919	Ascension - Rio de Janeiro, Brazil	Telcon	Eastern Telegraph Co	Colonia	System 2103 nm
1919	Yoshimi, Japan - Annam, Korea	?	Japanese Government	?	System 213 km. Four conductors with rubber insulation
1920	Valentia - Le Havre	Telcon	Western Union Telegraph Co	?
1920	Leba, Germany - Pillau, East Prussia	Felten & Guilleaume	German PTT	Randulf Hansen
1920	Maranham - Barbados	Telcon	Western Telegraph Co	Stephan - Colonia
1920	Miami - Barbados	Telcon	Western Union Telegraph Co	Stephan - Colonia	System 1638 nm. Robert C. Clowry laid the USA shore end.
1920	Atalaya, Argentina - Montevideo, Uruguay (across the River Plate)	Telcon	All America Cables	Carceres	Three cables were laid over this route during 1920. Caceres was a local vessel chartered to lay these cables and was manned by men from Colonia
1920	Atalaya - Rio de Janeiro	Telcon	All America Cables	Colonia	System 1270 nm.
1920	Montevideo - Santos	Telcon	All America Cables	Colonia	System 1068 nm.
1920	Aden - Bombay	Telcon	Eastern Telegraph Co	Stephan - John Pender (2)
1920	Colon, Panama - Cartagena, Colombia	Siemens Bros	All America Cables	Faraday (1)	System 1418 nm. Including entry below.
1920	Santa Elena - Chorillos	Siemens Bros	All America Cables	Faraday (1)	See above
1920	Cuba - Puerto Rico	Siemens Bros	All America Cables	Faraday (1)	System 602 nm.
1920	Malta - Alexandria No 5	Telcon	Eastern Telegraph Co	Stephan - Electra
1920	Syra - Tenedos	Telcon	Eastern Telegraph Co	Sentinel (1) - Levant II
1920	Nikaria - Samos	Telcon	Greek Government - Eastern Telegraph Co	Levant II
1920	Montevideo - Santos	?	?	Colonia
1920	Isono Aomori - Ohmorihama Hakodate, Japan No 2	?	Japanese Government	?	System 108.5 km. Single conductor insulated with gutta percha
1921	Dutch East Indies: Soerabaja - Macassar - Donggla - Menado	Norddeutsche Seekabelwerke	DEI Government	Flint	System 1710 nm.
1921	Island Cove, Newfoundland - North Sydney, Cape Breton Island - Canso, Nova Scotia	?	American Telegraph & Cable Co	?	A further link for the 1881-2 cables. The extension to Canso was made in 1922. Western Union leased the cable.
1921	Cape Cruz - Santiago	?	Cuba Submarine Telegraph Co	?
1921	Havana - Miami	Telcon	All America Cables	Stephan
1921	Gibraltar - Malta No 5	Telcon	Eastern Telegraph Co	Colonia - Amber - John Pender (2)
1921	Madras - Singapore	Telcon	Eastern Extension, Australasia & China Telegraph Co	Colonia	Diverted into Penang in 1923
1921	Key West, Florida - Havana, Cuba	Telcon	Cuban American Telephone & Telegraph Co	Colonia	System 100, 104, 105 nm. 3 coaxial cables.
1921	Mogi, Nagasaki-ken, Japan - Dairen, Manchuria	?	Japanese Government	?	System 1202 km. Single conductor insulated with gutta percha
1922	Port Kale - Donaghadee No 3	?	GPO	?
1922	Malta - Alexandria No 6	Telcon	Eastern Telegraph Co	Stephan - Electra
1922	Suez - Port Sudan - Aden	Telcon	Eastern Telegraph Co	Colonia - Stephan
1922	Aden - Seychelles	Telcon 1587 nm	Eastern & South African Telegraph Co	Colonia - Stephan
1922	Seychelles - Colombo, Ceylon	Telcon	Eastern Telegraph Co	Colonia - Stephan
1922	Cocos - Batavia	Telcon	Eastern Extension Australasia & China Telegraph Co	Patrol
1922	Maceio - Rio de Janeiro, Brazil	Telcon	Western Telegraph Co	Colonia
1922	Pernambuco - Maranham	Telcon	Western Telegraph Co	Colonia
1922	Santos - Rio de Janeiro	Telcon	Western Telegraph Co	Colonia
1922	Leba - Danzig: Leba - Pillau	Felten & Guilleaume	German PTT	Norderney
1922	Shibukawa, Okayama-ken, - Nou, Kagawa, Japan	Sumitomo	Japanese Government	?	System 10.9 km. Telephone cable 16 conductors, paper insulated and lead sheathed
1923	Valentia, Ireland - Whitesands Bay, Sennen Cove, England	Telcon	Western Union Telegraph Co	Stephan - T. W. Stuart
1923	Horta, Azores - Le Havre, France	Telcon	Commercial Cable Co	Colonia - Robert C. Clowry
1923	Penang, Malaya - Colombo, Ceylon	Telcon	Eastern Extension, Australasia & China Telegraph Co	Colonia
1923	Sydney - Southport, Australia	Telcon	Pacific Cable Board	Stephan	WFS 1964
1923	Suva, Fiji - Auckland, New Zealand	Telcon	Pacific Cable Board	Stephan	WFS 1964
1923	New York - Canso, Nova Scotia	Siemens Bros	Commercial Cable Co	Faraday (2)	System 1000 nm.
1923	San Pedro, California - Avalon, Catalina Island	?	AT&T	Dellwood	System 23, 23 nm. 2 cables laid.
1923	Innoshima - Mukojima, Japan	Furukawa	Japanese Government	?	System 5.2 km. Continuously loaded, 2 pair, telephone cable with gutta percha insulation
1923	Innoshima - Ikuchijima, Japan	Furukawa	Japanese Government	?	System 1.3 km. Continuously loaded, 2 pair, telephone cable with gutta percha insulation
1924	Rockaway Beach, New York - Horta, Azores	Telcon	Western Union Telegraph Co	Colonia, Robert C. Clowry	System 2360 nm. Continuously loaded cable using permalloy. Cable landed at Rockaway Beach 20 September 1924. Connection extended to Rome via the following two cables.
1924	Anzio - Malaga: Malaga - Las Palmas	Norddeutsche Seekabelwerke	Italcable	Citta di Milano (2)	System 1005 + 870 nm. Anzio - Malaga continuously loaded cable using permalloy
1924	Malaga, Spain - Horta, Azores	Telcon	Italcable	Colonia	System 1337 nm. Continuously loaded cable using permalloy
1924	Las Palmas - St Vincent, Cape Verde Islands	Pirelli	Italcable	Citta di Milano (2)	System 963 nm.
1924	St Vincent (CVI) - Fernando Noronha - Rio de Janeiro	Siemens Bros	Italcable	Faraday (2)	System 1513 + 1824 nm. The last section was diverted into Recife in 1951
1924	Rio de Janeiro - Montevideo - Buenos - Aires	Telcon	Italcable	Colonia	System 1203 + 200 nm. Two cables were laid between Montevideo and Buenos Aires
1924	Barbados - British Guiana: Barbados - Trinidad: Barbados - Turks Island	Siemens Bros	West India & Panama Telegraph Co	Faraday (2)	System 1817 nm.
1924	Aldeburgh - Domberg 1	Siemens Bros	GPO	Faraday (2)
1924	Aldeburgh - Domberg 2	Felten & Guilleaume	GPO	Norderney - Neptun (1)	Continuously loaded telephone cable
1924	Seattle - Ketchikan - Seward, Alaska	Siemens Bros	US Army Signal Corps	Dellwood	System 1894 nm. Siemens Bros did not lay this cable.
1924	Yobuko Saga - Hatsuyama Iki, Japan	?	Japanese Government	?	System 35.4 km. 2 pair telephone cable with gutta percha insulation
1924	Philippeville - Marseille, France	A Grammont	French PTT	?	System 1200 km
1925	New York - Fisherman's Point, Cuba - Colon, Panama	Telcon	All America Cables	Colonia	System 1542 + 787 nm.
1925	Porthcurno, England - Bilbao, Spain	Telcon	Eastern Telegraph Co	Colonia
1925	Malaga, Spain - Isla Alhucemas, Morocco	Norddeutsche Seekabelwerke	Spanish PTT	Norderney	System 104 nm.
1925	Murotso, Yamaguchi-ken, Japan - Ryuko, Korea	?	Japanese Government	?	System 215.6 km. Two conductors with gutta percha insulation
1925	Ishizaki - Tobetsu	?	Japanese Government	?	System 65 km. Continuously loaded, 2 pair, telephone cable insulated with balata
1925	Sangenya - Ohtachiura, Shimonoeski Straits, Japan	?	Japanese Government	?	System 3.6 km. Continuously loaded, 14 pair , paper insulated, lead sheathed telephone cable
1926	Warnemunde, Germany - Gedser, Denmark	Norddeutsche Seekabelwerke	Danish PTT	Norderney	System 25 nm.
1926	Cadiz - Tenerife	Norddeutsche Seekabelwerke	Spanish PTT	Norderney
1926	Borkum - Fayal, Azores	Norddeutsche Seekabelwerke	German Atlantic Telegraph Co	Neptun (1)	Continuously loaded cable. Diverted into Cherbourg in 1944 for use by US Forces in Europe.
1926	Cocos (Keeling) Islands - Cottesloe, Perth	Telcon	Eastern Extension Australasia & China Telegraph Co	Colonia	Continously loaded cable. WFS 1966. C&W recovered part of this cable during 1986.
1926	Sennen Cove, Cornwall, England - Bay Roberts, Newfoundland - New York, USA	Telcon	Western Union Telegraph Co	Colonia	System 3410 nm. Continuously loaded cable.
1926	Bamfield - Fanning Island	Telcon	Pacific Cable Board	Dominia	Loaded cable
1926	Fanning Island - Suva, Fiji	Siemens Bros	Pacific Cable Board	Faraday (2)	System 2043 nm. Loaded cable
1926	Dumpton Gap, England - La Panne, Belgium 1	Siemens Bros	GPO	Faraday (2) - Homedale	Homedale laid the 20 nm of shore ends which weighed 530 tons. Continuously loaded telephone cable.
1926	Aldeburgh, England - Domburg, Holland	Felten & Guilleaume	German PTT	Norderney - Neptun (1)
1926	Germany - Denmark	Siemens & Halske	German PTT	Norderney
1926	Cadiz - Tenerife: Rio Martin - Melilla	Norddeutsche Seekabelwerke	Spanish PTT	?
1926	Balboa, Panama - Santa Elena, Ecuador	Siemens Bros	All America Cables	Faraday (2)	System 770 nm.
1926	Penon - Punta Pescadores, Spain	Telcon	Spanish PTT	Telconia
1926	Penon - Cuatro Torres No. 2, Spain	Telcon	Spanish PTT	Telconia
1927	Tehuantepec, Mexico - La Libertad, El Salvador - San Juan del Sur, Nicaragua - Puntarenas, Costa Rica	?	All America Cables	?
1927	Buenaventura, Colombia - Payta, Peru - Chorillos, Peru	?	All America Cables	?
1927	Anzio - Barcelona - Malaga	?	Italcable	?
1927	Germany - Sweden	Felten & Guilleaume	German PTT	Norderney
1927	Kephez - Nagara	Telcon	Eastern Telegraph Co	?
1927	Alexandria - Port Said No 2	Telcon	Eastern Telegraph Co	Colonia
1927	Hiraiso Shikoku - Shuugi, Ohita-ken, Japan	?	Japanese Government	?	System 44.2 km. Continuously loaded, 2 pair, telephone cable insulated with balata
1927	Suruga Kure - Yanagihara Shikoku, Japan	?	Japanese Government	?	System 34.1 km. Continuously loaded, 4 pair, paper insulated, lead sheathed telephone cable.
1928	Alexandria - Port Said No 3	Telcon	Eastern Telegraph Co	Colonia
1928	Larnaca, Cyprus - Haifa, Israel	Telcon	Eastern Telegraph Co	Colonia
1928	Bay Roberts - Horta	Telcon	Western Union Telegraph Co	Colonia	Continuously loaded cable
1928	Sweden - Finland	Felten & Guilleaume	German PTT	Norderney
1928	Kakutahama, Niigata-ken, - Mushiroba Sado, Japan	?	Japanese Government	?	System 38.8 km. Continuously loaded, 2 pair, telephone cable insulated with balata.
1928	Ishizaki - Tobetsu, Tsugaru Straits, Japan	?	Japanese Government	?	System 64.2 km. Continuously loaded, 2 pair, telephone cable insulated with balata.
1928	Kouzohama Izu - Niijima, Japan	?	Japanese Government	?	System 57.5 km. Single conductor insulated with gutta percha
1929	Cuttlefish Bay, Kangaroo Island - Cape Jervis, Australia	?	?	?	First telephone cable to the island
1929	Vigo, Spain - Carcavelos, Portugal	Telcon	Eastern Telegraph Co	Dominia
1929	Spain - Ceuta	Telcon	Spanish PTT	Dominia
1929	Cadiz, Spain - Arzila, Morocco	Telcon	Spanish PTT	Telconia	Telconia also laid a number of cables along the Moroccan coast
1929	Tenerife - Gran Canaria		Spanish PTT	Dominia
1929	Malaga - Lisbon	?	Italian PTT	?
1929	Anzio - Palermo - Cagliari	?	Italian PTT	?
1929	Leba - Pillau	Siemens and Halske	German PTT	Norderney
1929	Ballyhornan - Port Erin (Isle of Man) 1 & 2	Siemens Bros	GPO	Faraday (2) - Sirdar	Sirdar laid the IOM shore ends. Four core balata insulated telephone cables
1929	Blackpool, England - Port Greenhaugh, Ireland	Siemens Bros	GPO	Faraday (2) - George	George laid the Blackpool shore ends. Continuously loaded paper insulated telephone cable
1929	Borkum - Vigo	Norddeutsche Seekabelwerke	German Atlantic Telegraph Co	Norderney
1929	Suma - Kusumoto, Akashi Straits, Japan	?	Japanese Government	?	System 17 km. Non loaded, 14 pair, paper insulated, lead sheathed telephone cable.
1929	Amanura - Satoura, Nauto Straits, Japan	?	Japanese Government	?	System 11.6 km. 14 pair, paper insulated, lead sheathed telephone cable.
1929	Oogami, Saga-ken - Ohkubo Iki, Japan	?	Japanese Government	?	System 30 km. Continuous1y loaded, 1 pair, paper insulated, lead sheathed telephone cable
1929	Oogami, Saga-ken - Katsumiura, Tshushima, Japan	?	Japanese Government	?	System 101.1 km. Continuously loaded, 2 pair, paper insulated, lead sheathed telephone cable
1930	Sweden - Gotland	Felten & Guilleaume	Swedish PTT	Norderney
1930	Belgium - Portugal	Telcon	Italcable	Dominia
1930	Dumpton Gap, England - La Panne, Belgium 2	Siemens Bros	GPO	Faraday (2) - Jolly Diana	Jolly Diana laid 16 nm of shore ends. Continuously loaded telephone cable.
1930	Seabrook - Le Portel	Siemens and Halske	GPO	Norderney
1930	France - England	Siemens and Halske	GPO - French PTT	Norderney
1930	Zarrenzin - Kampinge	Felten & Guilleaume	?	Norderney
1930	Willemstad - La Guayra	Telcon	All America Cables	Dominia
1930	Willemstad - Aruba - Maracaibo - Barraquilla	Telcon	All America Cables	Dominia
1930	Key West, Florida - Havana, Cuba 4	Norddeutsche Seekabelwerke	AT&T	Neptun (1)	System 111 nm. First cable insulated with Paragutta.
1930	Izumo Oashi - Iki Futoi, Japan	?	Japanese Government	?	Continuously loaded, 2 pair, paper insulated, lead sheathed telephone cable
1931	Ystad, Sweden - Rönne, Bornholm	Siemens and Halske	Swedish PTT	Norderney	System 35 nm.
1931	Heligoland - Sylt	Felten & Guilleaume	German PTT	Norderney
1931	Germany - Denmark	Felten & Guilleaume	?	Norderney
1931	Charlottehund,Denmark - Barseback, Sweden	Siemens and Halske	Danish PTT	Norderney	System 12 nm.
1931	France - Tunisia	?	French PTT	Ampere (2)
1932	France - Algeria	?	French PTT	Ampere (2)
1932	Dakar (Senegal) - Conakry (Guinea)	Telcon?	French PTT	Dominia	Noted as cable no. 2 on this route
1932	St Margarets Bay - La Panne 5	Siemens Bros	GPO	Faraday (2)	Lump loaded telephone cable
1932	Ootsu, Kanagawa-ken - Futsu, Chiba-ken, Japan	?	Japanese Government	?	System 16.1 km. 2 pair telephone cable insulated with gutta percha
1932	Futoi, Shimani-ken - Seigou, Japan	?	Japanese Government	?	System 36.2 km. Lump loaded, 6 pair, Paper insulated, lead sheathed telephone cable. Steel armouring wires used for the first time in Japanese home waters
1933	Florida - Fowey Rocks Light	Simplex Wire & Cable Co	US Coastguard	?
1933	Ozaki, Tsushima - Annam, Korea	?	Japanese Government	?	System 90.9 km. Continuously loaded, 2 pair, telephone cable with gutta percha insulation
1934	Delos - Mykonos	Telcon	Greek Government - Eastern Telegraph Co	Retriever (3)
1934	Gross Mollen - Pillau	Siemens and Halske - Felten & Guilleaume	German PTT	Neptun (1)
1934	Shibukawa, Okayama-ken - Nou, Kagawa-ken, Japan	?	Japanese Government	?	System 9.9 km. Continuously loaded, 14 pair, paper insulated, lead sheathed telephone cable.
1934	Enfutso, Hokkaido - Merei Karafuto, Japan	?	Japanese Government	?	System 162.8 km. Telephone cable with paragutta insulation
1936	Bass Strait Telephone Cable: Apollo Bay, Victoria, Australia - King Island - Perkins Bay, Stanley, Tasmania	Siemens Bros	Australian Government	Faraday (2)	System 161 nm. Standard Telephone & Cables Ltd were the consulting engineers for the project and they contracted Siemens Bros to manufacture and instal the cable. This was the first coaxial telephone cable laid across the Bass Strait and the first insulated with paragutta, a product developed by Bell Laboratories. It consisted of a mixture of protein-free rubber and resin-free balata combined with a plasticiser. A repeater station was installed on King Island. The cable failed on four occasions: 1938, 1940, 1943 and 1957. In 1957 a large part of the cable was renewed
1936	Fremantle - Rottnest Island	Siemens Bros	Australian Government		System 11 nm. An old hulk was fitted out for this expedition
1936	Tunisia - Yugoslavia	?	French PTT	?	System 802 nm.
1936	Onodo, Yamaguchi-ken - Karita, Fukuoka-ken, Japan	?	Japanese Government	?	System 24.6 km. Non loaded, 28 pair, paper insulated, lead sheathed telephone cable
1937	Aldeburgh - Domberg 4	Submarine Cables Ltd.	GPO	Faraday (2)	System 81 nm. CS Alert (3) inserted 4 repeaters in the cable in 1950
1937	Aldeburgh - Domberg No 5	Submarine Cables Ltd.	GPO	Faraday (2)	System 81 nm. CS Alert (3) inserted 4 repeaters in the cable in 1951
1937	Port Kale - Donaghadee 4 & 5	Submarine Cables Ltd	GPO	Faraday (2)	Paragutta insulated telephone cables
1937	Cook Strait	?	NZ PO	Recorder (2)
1937	Aber Geirch - Howth No 2	Submarine Cables Ltd	GPO	Faraday (2)	Paragutta insulated telephone cable
1937	Fukuoka - Iki - Tshushima, Japan - Pusan, Korea	?	Japanese Government	?	System 201 km. Non loaded, 14 pair, paper insulated, lead sheathed telephone cable.
1938	Aber Geirch - Howth No 3	Submarine Cables Ltd	GPO	Faraday (2)	Paragutta insulated telephone cable
1938	Heligoland - Wangeroge	Felten & Guilleaume	German PTT	Norderney
1938	Mariehamn - Norrtelje	Felten & Guilleaume - Siemens and Halske	Swedish PTT	Norderney
1938	Rio de Janeiro - Santos	?	Italcable	?
1938	Dartmouth, England - Guernsey - Jersey	Submarine Cables Ltd	GPO	Faraday (2)	Paragutta insulated coaxial telephone cable. 3 repeaters were inserted by CS Alert (3) in 1952
1938	France - Tunisia	?	French PTT	Ampere (2)
1938	Tunisia - Lebanon	Submarine Cables Ltd	French PTT	Faraday (2)
1938	Penghu, Taiwan - Amoy, China	?	?	?	System 276.2 km. Single conductor with gutta percha insulation
1938	Takao, Japan - Canton, China	?	?	?	System 795.2 km
1939	France - Algeria	?	French PTT	Ampere (2)
1939	St Margarets Bay - Sangatte 4	?	GPO	?
1939	Marshall Islands network	?	Japanese Navy	?
1939	Kwajalein Islands network	?	Japanese Navy	?
1940	Germany - Norway	Norddeutsche Seekabelwerke	German PTT	?
1940	Arendal, Norway - Hirtshals, Denmark	Norddeutsche Seekabelwerke	Norwegian PTT	Norderney	3 repeaters were inserted in 1956 increasing capacity to 60 voice circuits.
1940	Jersey - Pirou No 2	Submarine Cables Ltd	French PTT	Faraday (2) - Ariel	Coaxial cable insulated with parragutta
1940	Dartmouth, England - Guernsey - Jersey	Submarine Cables Ltd	GPO	Ariel	Paragutta insulated coaxial telephone cable. CS Alert (3) inserted 3 repeaters in the Dartmouth - Guernsey section in 1952
1940	Canton - Kaiantou - (Off) French Indo China	?	Japanese Military	?	System 387.7 km. Single conductor with gutta percha insulation
1941	Palau Island - Koror Island	?	Japanese Military		30 pair, paper insulated, lead sheathed telephone cable.
1941	Saipan - Tinian	?	?	?	System 2 cables laid 11.2km and 13.8 km.
1941	Truk Islands network	?	Japanese Military	?
1941	Ootsu - Futsu, Tokyo Bay	?	Japanese Government	?	System 19.6 km. 28 pair, paper insulated, double lead sheathed telephone cable
1942	Germany - Heligoland	Norddeutsche Seekabelwerke	German PTT	?
1942	Ballyhornan - Port Erin, Isle of Man No 3	Submarine Cables Ltd	GPO	?
1942	Cameas - Port Erin	Submarine Cables Ltd	GPO	?
1942	Palau - Yap and Palau - Menado (1905 Guam - Yap - Menado cable)	?	Japanese Military	?	Former German cable diverted into Palau
1942	Kure - Matsuyama, Japan	?	Japanese Government	?	System 35.5 km. 14 pair, paper insulated, lead sheathed telephone cable.
1942	Tanyu - Shuhon, Kitan Straits, Japan	?	Japanese Government	?	System 26.4 km. 28 pair, paper insulated, lead sheathed telephone cable.
1942	Amaura - Satoura, Naruto Straits, Japan	?	Japanese Government	?	System 11.6 km. 28 pair, paper insulated, lead sheathed telephone cable.
1943	Bornholm - Poland	?	Danish PTT		2 cables were laid
1943	Australia - New Guinea		Australian Military	SS Mernoo	Recovered 1909 Bass Strait cables. In use for about three months
1943	Tamai - Misaki, Toyogo Waterway, Japan	?	Japanese Government	?	System 40.2 km. 2 pair telephone cable insulated with paragutta
1943	Tanaki, Tshushima - Ikeura, Korea	?	Japanese Government	?	System 91 km. Non loaded, 14 pair, paper insulated, lead sheathed telephone cable
1943	Ishizaki - Tobetsu, Tsugaru Straits, Japan	?	Japanese Government	?	System 67.5 km. Non loaded, 8 pair, lead sheathed telephone cable. Cable recovered in 1949 and reused between Mori and Muroran
1943	Enfutso, Hokkaido - Merei Karafuto, Japan	?	Japanese Government	?	System 174.4 km including entry below. Continuously loaded, 2 pair, balata insulated telephone cable
1943	Enfutso, Hokkaido - Merei Karafuto, Japan	?	Japanese Government	?	System see above entry. Continuously loaded, 1 pair, balata insulated telephone cable.
1944	Swanage - Cherbourg	Submarine Cables Ltd	Allied Forces in France	?	2 cables were laid
1944	St Margaret's Bay - Sangatte No 5	Submarine Cables Ltd	GPO	?	Coaxial cable insulated with Telcothene
1944	Katsumiura, Tshushima - Hanjyou Iki, Japan	?	Japanese Government	?	System 68.4 km. 14 pair, paper insulated, lead sheathed telephone cable
1944	Fukuoka - Okubo Iki, Japan	?	Japanese Government	?	System 39.7 km. 14 pair, paper insulated, lead sheathed telephone cable
1944	Mori - Muroran, Japan	?	Japanese Government	?	System 342 km. 14 pair, paper insulated, lead sheathed telephone cable
1945	St Margaret's Bay - Sangatte No 6	Submarine Cables Ltd	GPO	?	Coaxial cable insulated with Telcothene
1945	St Margaret's Bay - Sangatte No 7	Submarine Cables Ltd	GPO	?	Coaxial cables insulated with Telcothene. Diverted in 1951 to make Dover - Sangatte No 3
1945	Lowestoft - Borkum	Submarine Cables Ltd	GPO	?	Coaxial cable insulated with Telcothene
1945	Cook Strait, New Zealand	Submarine Cables Ltd	NZ PO	Recorder (2)
1945	Ishizaki - Tobetsu, Tsugaru Straits	?	Japanese Government	?	System 64.1 km. 2 pair, gutta percha insulated telephone cable
1945	Kanzaki - Yasuki No 1, Toyogo Waterway	?	Japanese Government	?	System 46.6 km. 14 pair, paper insulated, lead sheathed telephone cable.
1947	Anglo-Dutch: Aldeburgh - Domberg 6	Submarine Cables Ltd	GPO	Monarch (4) - Alert (3)	Coaxial cable insulated with Telcothene
1947	Holyhead - Dollymount 1 & 2	Submarine Cables Ltd	GPO	?	Coaxial cables insulated with Telcothene. CS Ariel inserted 2 repeaters in each cable in 1953.
1947	Ishizaki - Tobetsu, Tsugaru Straits	?	Japanese Government	?	System 70.5 km. Telephone cable, 8 pair, paper insulated core, with rubber insulation, then lead sheath applied
1948	Anglo-Belgian: St Margarets Bay - La Panne 5	Submarine Cables Ltd	GPO	?	Coaxial cable insulated with Telcothene. CS Iris (2) inserted 2 transistorised repeaters in 1964 increasing the number of circuits from 216 to 420.
1948	Denmark - Bornholm	?	Great Northern Telegraph Co	Edouard Suenson
1948	Amaura - Satoura No 2, Kammon Straits	?	Japanese Government	?	System 14 km. Non loaded, 28 pair, paper insulated core, with rubber insulation enclosed in lead sheath
1948	Tanyu - Sumoto No 2, Kitan Straits	?	Japanese Government	?	System 28 km. Non loaded, 28 pair, paper insulated core, with rubber insulation enclosed in lead sheath
1949	Mori - Muroran, Tsugara Straits	?	Japanese Government	?	System 31.3 km. Non loaded, 8 pair, lead sheathed telephone cable. 1943 cable laid between Ishizaki and Tobetsu recovered and reused on this route
1950	Weybourne, England - Fanö, Denmark	Telcon	Great Northern Telegraph Co	Monarch (4) - Edouard Suenson	First coaxial cable for Great Northern. Two repeaters were inserted to increase capacity to 72 channels. These were replaced in 1957 with 5 repeaters increasing capacity to 168 channels.
1950	Port Kale - Donaghadee 6 & 7	?	GPO	?
1950	Römo, Denmark - Leeuwarden, Holland No 1	Submarine Cables Ltd. - Standard Telephone & Cables Ltd supplied 2 repeaters	Danish PTT - Dutch PTT	Monarch (4) - Poolster (2) - C.E. Krarup (2)	System 142 nm. The 2 repeaters were replaced by 7 in 1956 by Alert (3) and Poolster (2)
1950	Römo, Denmark - Leeuwarden, Holland No 2	Telcon - Standard Telephone & Cables Ltd supplied 2 repeaters	Danish PTT - Dutch PTT	Monarch (4) - Poolster (2) - C.E. Krarup (2)	System 142 nm. The 2 repeaters were replaced by 7 in 1961 by Peter Faber (2).
1950	Douglas, Isle of Man - Kirkcudbright, Scotland	?	GPO	?	Coaxial cable insulated with Telcothene
1950	Key West - Havana 5 & 6	Simplex Wire & Cable Co	Cuban American Telephone & Telegraph Co	Lord Kelvin	System 248 + 248 nm. Full trial of twin telephone cables with one way repeaters. WFS 1989. Used for scientific research
1950	Cannes - Nice	Cables de Lyon	French PTT	D'Arsonval	Experimental cable with one repeater
1950	Ishizaki - Tobetsu, Tsugaru Straits	?	Japanese Government	?	System 68.8 km. 8 pair, telephone cable insulated with paragutta, enclosed in lead sheath
1950	Soshiama, Tsushima - Ikeru, Korea	?	UN Forces	?	System 129.1 km. 2 pair with gutta percha insulation and 2 pair with balata insulation
1950	Kanzaki - Yasuki No 2, Toyogo Waterway	?	Japanese Government	?	System 46.6 km. 7 pair, paper insulated, lead sheathed telephone cable

Return to Cable Timeline main page

Last revised: 26 December, 2009

Return to Atlantic Cable main page

Search all pages on the Atlantic Cable site:

Research Material Needed

The Atlantic Cable website is non-commercial, and its mission is to make available on line as much information as possible.

You can help - if you have cable material, old or new, please contact me. Cable samples, instruments, documents, brochures, souvenir books, photographs, family stories, all are valuable to researchers and historians.

If you have any cable-related items that you could photograph, copy, scan, loan, or sell, please email me: billb@ftldesign.com

—Bill Burns, publisher and webmaster: Atlantic-Cable.com